Class Manage | Help Week5 Begin Date: 6/26/2023 12:01:00 AM -- Due Date: 7/11/2023 11:59:00 PM End Date: 8/10/2023 11:59:00 PM (8%) Problem 2: Two blocks are connected by a massless rope. The rope passes over an ideal (frictionless and massless) pulley such that one block with mass my = 12.5 kg is on a horizontal table and the other block with mass my = 7.5 kg hangs vertically. Both blocks experience gravity and the tension force, T. Use the coordinate system specified in the diagram. m Otheexpertta.com 25% Part (a) Assuming friction forces are negligible, write an expression, using only the variables provided, for the acceleration that the block of mass my experiences in the x-direction. Your answer should involve the tension, I. a1 = T/mj V Correct! $ 25% Part (b) Under the same assumptions, write an expression for the acceleration, a2, the block of mass my experiences in the y-direction. Your answer should be in terms of the tension, T and my. Grade Summary a2 = g - T/m2 Deductions 0% Potential 100% a. B 7 8 9 HOME Submissions ed d 4 5 6 Attempts remaining: 994 g (0% per attempt) ed h 1 2 3 detailed view 0% A m 2 P 0 END 0% ted Z VO BACKSPACE DEL CLEAR 3 0% ted 0% Submit Hint Feedback I give up ! Hints: 0% deduction per hint. Hints remaining: 3 Feedback: 0% deduction per feedback 25% Part (c) Carefully consider how the accelerations a, and a2 are related. Solve for the magnitude of the acceleration, a1, of the block of mass my, in meters per square second. a1 = 3.680 Correct! FS FG FB S 5 6 E R T G HtheExpertTA.com Student: telghazi2101@ student.s Class Management | Help Week5 Begin Date: 6/26/2023 12:01:00 AM -- Due Date: 7/11/2023 11:59:00 PM End Date: 8/10/2023 11:59:00 PM (4%) Problem 7: Referring to the image to the right, the mass of Block 1 is m1 = 3.47 kg while the mass of Block 2 is m2 - 9.33 kg. The coefficient of kinetic friction between Block 1 and the inclined surface is My = 0.37. The inclined surface is at an angle 0 = 37.2 above the horizontal. 2 itus pleted pleted 50% Part (a) Using thevariables from the problem statement together with the acceleration due to gravity, 9, write an equation for the magnitude of the pleted acceleration of the system. Hint: Based upon the numeric choices, Block I will accelerate up the incline while the suspended block, Block 2, accelerates vertically pleted downward. pleted a. = (m1 - m2 ) ( sin(0) + Uk cos(0) ) g/( m1 + m2 )| Grade Summary Deductions 0% Potential 100% pleted cos(a ) cos(Q) cos(0) 7 8 9 HOME Submissions pleted sin(a ) sin(Q in(0) 4 5 6 Attempts remaining: 995 pleted (0% per attempt) Us 2 3 detailed view al 0 END 0% pleted g 0% pleted n VO BACKSPACE DEL CLEAR 0% al 0% Submit pleted Feedback I give up ! pleted Hints: 0 for a 0% deduction. Hints remaining: 0 Feedback: 0% deduction per feedback. * 50% Part (b) Calculate the magnitude, in meters per squared second, of the system's acceleration. a = 4.030 m/s2 X Attempts Remain All content @ 2023 Expert TA, LLC X F4 F5 FB F10 S & 5 O O E R T G H K B N MpertTA.com Student: telghazi2101@student Class Management | Help Week5 Begin Date: 6/26/2023 12:01:00 AM -- Due Date: 7/11/2023 11:59:00 PM End Date: 8/10/2023 11:59:00 PM (8%) Problem 11: A small block of mass M= 850 g is placed on top of a larger block of mass 3M which is placed on a level frictionless surface and is attached to a horizontal spring of spring constant k = 3.8 N/m. The coefficient of static friction between the blocks is u = 0.2. The lower block is pulled until the attached spring is stretched a distance D = 7.5 cm and released. Randomized Variables M= 850 g D = 7.5 cm k = 3.8 N/m 25% Part (a) Assuming the blocks are stuck together, what is the maximum magnitude of acceleration amax of the blocks in terms of the variables in the problem statement? Grade Summary amax = UM g Deductions 0% Potential 100% B 17 8 9 HOME Submissions Attempts remaining: 993 a C 4 5 6 (0% per attempt) D g h 1 2 3 detailed view 0% A M + - 0 END 0% VO BACKSPACE DEL CLEAR 3 10% 10% Submit Hint I give up! Hints: 0% deduction per hint. Hints remaining: 2 Feedback: 0% deduction per feedback. ed * 25% Part (b) Calculate a value for the magnitude of the maximum acceleration amax of the blocks in m/s. amax = 1.960 X Attempts Remain * 25% Part (c) Write an equation for the largest spring constant kmax for which the upper block does not slip. Kmax = 4 Mug/M X Attempts Remain. 25% Part (d) Calculate a value for the largest spring constant kmax for which the upper block does not slip, in N/m. X 2F5 DIE FB F9 F10 F4 & Co 4 5 6 E R T G H K B NClass Management | Help Week5 Begin Date: 6/26/2023 12:01:00 AM -- Due Date: 7/11/2023 11:59:00 PM End Date: 8/10/2023 11:59:00 PM (10%) Problem 14: A book with mass m = 3.25 kg rests on the surface of a table. The coefficient of static friction between the book and the table is us = 0.75 and the coefficient of kinetic friction is uk = 0.28. m m H s , HK theexpertta.com 25% Part (a) Write an expression for Fm the minimum force required to produce movement of the book on the surface of the table. Fm = My mg / Correct! 25% Part (b) Solve numerically for the magnitude of the force Fm in Newtons. Fm = 23.89 Correct! 25% Part (c) Write an expression for a, the book's acceleration, after it begins moving. (Assume the minimum force, Fm, continues to be applied.) Grade Summary a = ( Us m - ukmg )/m Deductions 0% Potential 100% B HK ( ) 7 8 9 HOME Submissions Attempts remaining: 997 HS 6 (0% per attempt) d g h 3 detailed view 0% END 10% m P VO BACKSPACE DEL CLEAR Submit Hint I give up! Hints: 0% deduction per hint. Hints remaining: 3 Feedback: 0% deduction per feedback. 25% Part (d) Solve numerically for the acceleration, a in m/s a = 4.610 Correct! FB F9 F10 F12 X FA S % & 8 O O 4 E R H K G