When Crates A and B of mass ma = 38 kg and mB = 74 kg are released from rest, Crate A moves to the right on a rough surface (µk = 0.2 ). The force P = 18 Newtons is always acting on Crate B. The linear spring has a stiffness of k = 480 N and is initially stretched 0.5 meters before the system is released from rest. m Neglect the mass of the pulleys and cables and neglect friction in the pulley bearings. Determine the work done by the external force P (in Joules) when Crate A has moved a distance of 0.5 meters to the right.

When Crates A and B of mass ma = 38 kg and mB = 74 kg are released from rest, Crate A moves to the right on a rough surface (µk = 0.2 ). The force P = 18 Newtons is always acting on Crate B. The linear spring has a stiffness of k = 480 N and is initially stretched 0.5 meters before the system is released from rest. m Neglect the mass of the pulleys and cables and neglect friction in the pulley bearings. Determine the work done by the external force P (in Joules) when Crate A has moved a distance of 0.5 meters to the right.

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 7.48P: Find the smallest distance d for which the hook will remain at rest when acted on by the force P....

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