In a physics laboratory class, three massless ropes are tied together at a point. A pulling force is applied along each rope: F1 = 169 N at 600, F2 = 222 N at 1009, F3 = 117 N at 190. (All angles are measured counterclockwise from the positive x-axis.) a) What is the magnitude of a fourth force that acts to keep the point at the center of the system stationary? 351.56 N You are correct. Your receipt no. is 153-1080 Previous Tries b) What is the angle at which this fourth force acts to keep the point at the center of the system stationary? 101deg_, In the figure, an external Force F is holding a bob of mass 391 g in a stationary position. The angle that the massless rope makes with the veltical is l9 2 29.03. Draw a free-body diagram for the bob. To do thisr click on a force from the list below the figure, which you believe to be present in this free-body diagram. Then you can draw a force vector by clicking somewhere on o r near the container and dragging the cursor. The cursor location determines the endpoint of the vector, and the stalting point of the vector is automatically the center of the container. Concentrate on the direction of the force vectors only; the lengths of the vectors will be determined through calculations after the free- body diagram is constructed. A vector is counted as correct, if its angle is within : vectors, click on the "Submit Answer" button. Select Force Angles = \"eight 4'21 N = normal force 1; = string tension f = air friction f = orbital force 0 | F = external force :53 of the exact answer. Once you have drawn all force As shown in the figure, two masses, my = 3.35 kg and my = 4.51 kg, are on a frictionless tabletop and mass m3 = 7.53 kg is hanging from my. The coefficients of static and kinetic friction between my and my are 0.507 and 0.407, respectively. Draw a free-body diagram for my. To do this, click on a force from the list below the figure, which you believe to be present in this free- body diagram. Then you can draw a force vector by clicking somewhere on or near the mass and dragging the cursor. The cursor location determines the endpoint of the vector, and the starting point of the vector is automatically the center of the mass. Concentrate on the direction of the force vectors only; the lengths of the vectors will be determined through calculations after the free-body diagram is constructed. A vector is counted as correct, if its angle is within 150 of the exact answer. Once you have drawn all force vectors, click on the "Submit Answer" button. m1 m2 m3 Select Force Angles F = weight N = normal force from other mass T = string tension `= friction with support surface f = friction with other mass N = normal force from tableAs shown in the figure, two masses, m1 = 3.95 kg and m2 = 5.0? kg, are on a frictionless tabletop and mass m3 = 12? kg is hanging from ml. The coefficients of static and kinetic friction between m1 and on: are 0.463 and 0.363, respectively. Draw a free-body diagram for m2. To do this, click on a force from the list below the figure, which you believe to be present in this free- body diagram. Then you can draw a force vector by clicking somewhere on or near the mass and dragging the cursor. The cursor location determines the endpoint of the vector, and the starting point of the vector is automatically the center of the mass. Concentrate on the direction of the force vectors only; the lengths of the vectors will be determined through calculations after the free-bod),r diagram is constructed. A vector is counted as correctr if its angle is within :50 of the exact answer. Once you have drawn all force vectors, click on the \"Submit Answer" button. Select Force Angles = 1weight = normal force rom other mass string tension friction with support surface = friction with other mass Zlgm'eltl 25111 II = normal force iron] table As shown in the figure, two masses, m1 = 3.05 kg and HI: = 5.05 kg, are on a frictionless tabletop and mass m3 = 8.23 kg is hanging from ml. The coefcients of static and kinetic friction between m1 and m2 are 0.625 and 0.525, respectively. Draw a free-body diagram for m3. To do this, click on a force from the list below the figure, which you believe to be present in this free- body diagram. Then you can draw a force vector by clicking somewhere on or near the mass and dragging the cursor. The cursor location determines the endpoint of the vector, and the starting point of the vector is automatically the center of the mass. Concentrate on the direction of the force vectors only; the lengths of the vectors will be determined through calculations after the free-body diagram is constructed. A vector is counted as correct, if its angle is within 15" of the exact answer. Once you have drawn all force vectors, click on the "Submit Answer" button. Select Force Angles I: = weight 5'} = 110111131 force ora other mass 2": = string tension J? = xation with support smfaee f = xation with other mass Cl N = normal force from table As shown in the figure, two masses, m1 = 3.49 kg and m2 = 5.83 kg, are on a frictionless tabletop and mass m3 = 185 kg is hanging from ml. The coefcients of static and kinetic friction between m1 and m2 are 0.565 and 0.465, respectively. a} What are the accelerations of mi and m2? '31 : : 32 : Submit Answer Tries 0,199 b) What is the tension in the string between m1 and m3? Submit Answer Tries 0,199 Two blocks are connected by a massless rope as shown. Block 1 has mass m1 = 1.959 kg and block 2 has mass m2 = 3.203 kg. The two blocks move on a frictionless, horizontal tabletop. An external force F = 13.29 N is applied to block 2 as shown. Draw a free-body diagram for m1. To do this, click on a force from the list below the gure, which you believe to be present in this free- body diagram. Then you can draw a force vector by clicking somewhere on or near the mass and dragging the cursor. The cursor location determines the endpoint of the vector, and the starting point ol' the vector is automatically the center of the mass. Concentrate on the direction of the force vectors only; the lengths of the vectors will be determined through calculations after the Free-body diagram is constructed. A vector is counted as correct, if its angle is within i5 of the exact answer. Once you have drawn all force vectors, click on the \"Submit Answer" button. Select Forte Angles [1; = weight _. N = normal force if = string tension f = 'iction with support surface is = 'iction other mass F = external force Two blocks are connected by a massless rope as shown. Block 1 has mass m1 = 1.011 kg and block 2 has mass m2 = 3.093 lcg. The two blocks move on a frictionless, horizontal tabletop. An extemal force F = 16.2? N is applied to block 2 as shown. Draw a freebody diagram for m2. To do this, click on a force from the list below the figure, which you believe to be present in this free- body diagram. Then you can draw a force vector by clicking somewhere on or near the mass and dragging the cursor. The cursor location determines the endpoint of the vector, and the starting point of the vector is automatically the center of the mass. Concentrate on the direction of the force vectors only; the lengths of the vectors will be determined through calculations after the free-body diagram is constructed. A vector is counted as correct, if its angle is within 15" of the exact answer. Once you have drawn all force vectors, click on the "Submit Answer" button. Select Force Angles FE = weight 5]. = normal force if = string tension f = 'iction with support smface f = friction other mass o F = external force A mass, m1 = 19.5 kg, on a frictionless ramp is attached to a light string. The string passes over a frictionless pulley and is attached to a hanging mass, mg. The ramp is at an angle of B = 34\" above the horizontal. The mass m1 moves up the ramp uniformly (at constant speed]. Draw a free-body diagram for m1. To do this, click on a force from the list below the gure, which you believe to be present in this free- bodv diagram. Then you can oral-i.r a force vector by clicking somewhere on or near the container and dragging the cursor. The cursor location determines the endpoint of the vector, and the starting point of the vector is automatically the center of the container. Concentrate on the direction of the force vectors only; the lengths of the vectors will be determined through calculations after the free body diagram is constructed. A vector is counted as correct, if its angle is within i=5\" of the exact answer. Once you have drawn all force vectors, click on the "Submit Answer" button. Select Force Angles Fg = weight _. N = normal force if" = string tension f = 'ictiou with ramp f0 = 'iction from pulley F = external force from pulley A mass, m1 = 10.9 kg, on a frictionless ramp is attached to a light string. The string passes over a frictionless pulley and is attached to a hanging mass, ml. The ramp is at an angle of B = 30'1 above the horizontal. The mass m1 moves up the ramp uniformly {at constant speed). Draw a free-body diagram for m2. To do this, click on a force from the list below the gure, which you believe to be present in this free- body diagram. Then you can draw a force vector by clicking somewhere on or near the container and dragging the cursor. The cursor location determines the endpoint of the vector, and the starting point of the vector is automatically the center of the container. Concentrate on the direction of the force vectors only; the lengths of the vectors will be determined through calculations after the free bodv diagram is constructed. A vector is counted as correct, if its angle is within :|:5D of the exact answer. Once you have drawn all force vectors, click on the "Submit Answer" button. Select Force Angles I: = weight N = normal force _. T = string tension f = 'iction with ramp f0 = 'iction from pulley F = external force t'0111 pulley Submit Answer Tn'es DIE-19 Coffee filters behave like small parachutes, with a drag force that is proportional to the velocity squared, Fdrag = KV. A single coffee filter, when dropped from a height of 1.97 m, reaches the ground in a time of 2.97 s. When two more coffee filters are nestled within the first, the drag force remains the same, but the weight is tripled. Find the time for the combined 3 filters to reach the ground. (Neglect the brief period when the filters are accelerating up to their terminal speed.)Draw a free-body diagram for all force vectors acting on the mass m. To do this, click on a force from the list below the figure, which you believe to be present in this freebody diagram. Then you can draw a force vector by clicking somewhere on or near the mass and dragging the cursor. The cursor location determines the endpoint of the vector, and the starting point of the vector is automatically the center of the mass. Concentrate on the direction of the force vectors only; the lengths of the vectors will be determined through calculations after the free-body diagram is constructed. Assume for non.r that mass m is sliding up the incline. A vector is counted as correct, if its angle is within :250 of the exact answer. Hint: the angle 3 = 20. Once you have drawn all force vectors, click on the "Submit Answer" button. Select Force. Angles F's = weight 5.} = normal force from incline j: = string tension f = 'iction 1xii-"ith incline j; = 'iction with other mass F = external force A wedge of mass m = 37.5 kg is located on a plane that is inclined by an angle 0 = 21.3 with respect to the horizontal. A force F = 327.3 N in horizontal direction pushes on the wedge, as shown. The coefficient of friction between the wedge and the plane is 0.193. What is the acceleration of the F m wedge along the plane? (Negative numbers for motion to the left, and positive numbers for motion to the right, please.) Submit Answer Tries 0/99As shown in the figure, blocks of masses m, = 246.9 g and my = 589.3 g are attached by a massless string over a frictionless and massless pulley. The coefficients of static and kinetic friction between the block and inclined plane are 0.250 and 0.123, respectively. The angle of the incline is = 31.90, and the blocks are at rest initially. What is the acceleration of the m1 blocks? [Answer with a negative number if my moves downward, and a positive number if it moves upward.] Submit Answer Tries 0/99A block of mass M = 527.0 g sits on a horizontal tabletop. The coefficients of static and kinetic friction are 0.525 and 0.3?3, respectively. at the contact surface between table and block. The block is pushed on with a 11.3 N external force at an angle 9 with the horizontal. a) What angle with respect to the horizontal will lead to the maximum acceleration of the block for a given pushing force? : I SubmitAnswer | Tries 0,399 b} What is the maximum acceleration? : A curling stone with mass 19.00 kg is released with an initial speed vo sliding on level ice. The coefficient of kinetic friction between the curling stone and the ice is 0.01323. The curling stone travels a distance of 34.05 m before it stops. What is the initial speed of the curling stone