Body U with mass 5m is stacked on the top body W withmass m, and released. The bodies are in contact along thefrictionless interface at 45° to the vertical. The body U isin contact with the frictionless vertical wall. Body W lieson the floor with coefficient of friction u. Relevantdimensions are shown in the figure. Express the results interms of given quantities: m, g, h and µ (except when µ isgiven numerically).You need not evaluate sin 45° = cos 45° = 2/2.hU: 5mC45DW: m3h 11 Let u= 1/5. In initial configuration (shown), the velocities are zero. Find thefrictional force with the ground during the motion while the two bodies are in contact.Let u= 1/5. In initial configuration (shown), the velocities are zero. Find thevelocities (direction and magnitude) of U and W at the instant when they separate (i.e., whenthe point C of U coincides with point D of W). Use work-energy principle.

The weight of body U is tending to drop it down but due to presence of frictional force between body…

Body U with mass 5m is stacked on the top body W with mass m, and released. The bodies are in contact along the frictionless interface at 45 to the vertical. The body U is in contact with the frictionless vertical wall. Body W lies on the floor with coefficient of friction u. Relevant dimensions are shown in the figure. Express the results in terms of given quantities: m, g, h and µ (except when u is given numerically). You need not evaluate sin 45° = cos 45° = 2/2. %3D h U: 5m 45 D W: m 3h

Body U with mass 5m is stacked on the top body W with mass m, and released. The bodies are in contact along the frictionless interface at 45 to the vertical. The body U is in contact with the frictionless vertical wall. Body W lies on the floor with coefficient of friction u. Relevant dimensions are shown in the figure. Express the results in terms of given quantities: m, g, h and µ (except when u is given numerically). You need not evaluate sin 45° = cos 45° = 2/2. %3D h U: 5m 45 D W: m 3h

International Edition---engineering Mechanics: Statics, 4th Edition

4th Edition

ISBN:9781305501607

Author:Andrew Pytel And Jaan Kiusalaas

Publisher:Andrew Pytel And Jaan Kiusalaas

Chapter7: Dry Friction

Section: Chapter Questions

Problem 7.72P

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Body U with mass 5m is stacked on the top body W withmass m, and released. The bodies are in contact along thefrictionless interface at 45 to the vertical. The body U isin contact with the frictionless vertical wall. Body W lieson the floor with coefficient of friction u. Relevantdimensions are shown in the figure. Express the results interms of given quantities: m, g, h and u. The system moves. Write the condition that the velocities of U and W must satisfy for the two bodies to remain in contact. Consider the fact that this condition must be satisfied as long as the two bodies are in contact. What can you say about accelerations of the two bodies? Using the equations of motion for the two bodies compute the accelerations during the motion while in contact.
Body U with mass 5m is stacked on the top body W withmass m, and released. The bodies are in contact along thefrictionless interface at 45 to the vertical. The body U isin contact with the frictionless vertical wall. Body W lieson the floor with coefficient of friction u. Relevantdimensions are shown in the figure. Express the results interms of given quantities: m, g, h and u. What is the minimal coefficient friction to prevent sliding? Let the system move. What is the condition that the velocities of U and W must satisfy for the two bodies to remain in contact?
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