Class Management | Help Week4 Begin Date: 6/22/2023 12:01:00 AM -- Due Date: 7/4/2023 11:59:00 PM End Date: 8/10/2023 11:59:00 PM (6%) Problem 17: A brick with mass m = 19 kg is sinking with constant acceleration aT = 2.7 m/s into the level earth. The acceleration due to gravity is g = 9.81 m/s2. Please answer the following questions. m Ctheexpertta.com A 14% Part (a) Write an expression for the magnitude of the force of gravity on the brick, Fg, in terms of the given quantities and variables available in the palette. A 14% Part (b) Calculate the magnitude of the force of gravity on the brick, Fg in Newtons. Fg =1 N Grade Summary Deductions 0% Potential 100% sin() cos() tan() It ( ) 7 8 9 HOME Submissions cotan() asin( acos() E 4 5 6 Attempts remaining: 999 (0% per attempt) atan() acotan() sinh() 2 3 detailed view cosh( tanh() cotanh() END O Degrees O Radians VO CLEAR Submit Hint I give up! Hints: 0 for a 0% deduction. Hints remaining: 0 Feedback: 0% deduction per feedback. A 14% Part (c) In what direction does the force of gravity act? 4 14% Part (d) Write an expression for the total force of the system in the y-direction, FT, in terms of the forces of the system. 4 14% Part (e) Write an expression for the normal force F_\\text {N}, in terms of m, aT, and g. A 14% Part (1) What is the magnitude of the normal force in N? 4 14% Part (g) In what direction is the normal force? FZ FB F10 % & 5Class Management | Help Veek4 Begin Date: 6/22/2023 12:01:00 AM -- Due Date: 7/4/2023 11:59:00 PM End Date: 8/10/2023 11:59:00 PM (4%) Problem 18: A baby is being weighed in the the manner depicted in the figure. The upper end of rope 1 is connected to the bottom of the scale, and the baby and basket are attached to the lower end of the same rope. The scale, which has a mass 0.75 kg, hangs from rope 2, whose upper end is connected to the ceiling. The scale reads 66.8 N. 50% Part (a) What is the tension, in newtons, in rope 1? Grade Summary T1 =1 N Deductions 0% Potential 100% sin() cos() tan() 71 ( 7 8 9 HOME Submissions cotan() asin acos() E 4 5 6 Attempts remaining: 999 (0% per attempt) atan() acotan() sinh() 1 2 3 detailed view cosh() tanh() cotanh() 0 Degrees O Radians Vol Submit Hint I give up! Hints: 0% deduction per hint. Hints remaining: Feedback: 0% deduction per feedback. 4 50% Part (b) What is the tension, in newtons, in rope 2? F8 F9 F10 F1 1 F12 S &Class Management | Help Week4 Begin Date: 6/22/2023 12:01:00 AM -- Due Date: 7/4/2023 11:59:00 PM End Date: 8/10/2023 11:59:00 PM (6%) Problem 19: Two identical springs, A and B, each with spring constant k = 26.2 N/m, support an object with a weight W = 10.2 N. Each spring makes an angle of 0 = 25.5 degrees to vertical, as shown in the diagram, A B 4 50% Part (a) Write an expression for the tension in spring A (which is equal to the tension in spring B) in terms of W and 0. 4 50% Part (b) By how much is spring A stretched, in meters? * = Grade Summary Deductions 0% Potential 100% sin() COs() tan() 1 7 8 9 HOME Submissions cotan() asin() 4 5 6 Attempts remaining: 999 acos() (0% per attempt) atan() acotan() sinh() 1 2 3 detailed view cosh( tanh() cotanh() 0 Degrees O Radians VO Submit Hint I give up! Hints: 0% deduction per hint. Hints remaining: 1 Feedback: 0% deduction per feedback hsClass Management | Help Veek4 Begin Date: 6/22/2023 12:01:00 AM -- Due Date: 7/4/2023 11:59:00 PM End Date: 8/10/2023 11:59:00 PM (6%) Problem 22: A brave but inadequate rugby player is being pushed backward by an opposing player who is exerting a force of 780 N on him. The mass of the losing player plus equipment is $2 kg, and he is accelerating at 1.8 m/s backward. Randomized Variables f= 780N m1 = 82 kg m2 = 102 kg a = 1.8 m/s2 50% Part (a) What is the magnitude of the force of friction, in newtons, between the losing player's feet and the grass as he slides backwards? F1 = 1 Grade Summary Deductions 0% Potential 100% sin() cos tan() TE ( ) 7 8 9 HOME Submissions cotan() asin() acoso E 5 6 Attempts remaining: 999 (0% per attempt) atan() acotan() sinh() 2 detailed view cosh( tanh() cotanh() 0 Degrees O Radians VO CLEAR Submit Hint Feedback I give up! Hints: 0% deduction per hint. Hints Feedback: 0% deduction per feedback 4 50% Part (b) What is the magnitude of the force, in newtons, that the winning player exerts on the ground to move forward if his mass plus equipment is 102 kg? Assume the second player has the same acceleration as the first.Class Management | Help Week4 Begin Date: 6/22/2023 12:01:00 AM -- Due Date: 7/4/2023 11:59:00 PM End Date: 8/10/2023 11:59:00 PM (5%) Problem 23: A history book is lying on top of a physics book on a desk, as displayed on the right. A pair of free-body diagrams are also shown on the right. Noting that the weight of an object History book Physics book is the force due to its gravitational attraction to the Earth, the first letter of each of the bodies is used when labeling the forces. Fop . Feh is the force of the Earth on the history book. . Fep is the force of the Earth on the physics book. PHYSICS Fph is the normal force force of the physics book on the history book. . Fhp is the normal force force of the history book on the physics book. Fan Fap is the normal force force of the desk on the physics book. Assum that the positive direction is vertically upwards. The weights of the history and physics textbooks are 22.6 N and 84.2 N, respectively. ed 20% Part (a) Examine the free-body diagram for the history book. Using your knowledge of Newton's laws, enter an expression for the magnitude, in terms of the variables introduced in the problem statement, of the normal force of the physics book acting on the history book. Fph = | Grade Summary Deductions 0% Potential 100% B b 17 8 9 Submissions Feh 4 5 6 Attempts remaining: 999 (0% per attempt) Fep h 1 2 3 detailed view m +- 0 S VO Submit Hint I give up! Hints: 0% deduction per hint. Hints remaining: 2 Feedback: 0% deduction per feedback 20% Part (b) What is the magnitude, in newtons, of the normal force of the physics book on the history book? 20% Part (c) What is the magnitude, in newtons, of the force exerted on the physics book by the Earth? 20% Part (d) What is the magnitude of the normal force of the history book acting on the physics book. 4 20% Part (e) Examine the free-body diagram for the physics book. What is the magnitude, in newtons, of the normal force of the desk acting on the physics book?Class Management | Help Week4 Begin Date: 6/22/2023 12:01:00 AM -- Due Date: 7/4/2023 11:59:00 PM End Date: 8/10/2023 11:59:00 PM (4%) Problem 25: An object of mass 0.94 kg is subject to a force that is always directed towards the North but whose magnitude changes quadratically with time. The magnitude of the force is given as F = (8 N/s )t2. Let the y-axis point towards the North. A 50% Part (a) Determine the change in the velocity, in meters per second, of the object between an initial time to = 0 s and an elapsed time t = 2.1 s. Av = Grade Summary m/s Deductions 0% Potential 100% sin() cos( tan() 71 ( ) 7 8 9 HOME Submissions cotan() asin() acos() 4 5 6 Attempts remaining: 999 (0% per attempt) atan() acotan() sinh( 3 detailed view cosh() tanh() cotanh() END Degrees O Radians VO CLEAR Submit Hint I give up! Hints: 0% deduction per hint. Hints remaining:_ Feedback: 0% deduction per feedback 4 50% Part (b) Determine the change in y-coordinate, in meters, of the object between initial time to = 0's and an elapsed time t = 2.1 s, if the initial velocity is 15.2 m/s and directed North, in the same direction as the force. All content @ 2023 Expert TA, LLC