A 2 kg block is released from rest at position 1, slides down a frictionless curve, proceeds on a rough level surface and then comes to rest at position 3, compressing an ideal spring a distance x from its equilibrium position (SP EQ). a) If the spring constant is 600 N/m, S = 8 m, H = 1m, and x = 0.2m, find uk, the coefficient of kinetic friction between the level surface and the block. b) If there was no friction between the block and the horizontal surface, how much would the spring be compressed? k SP EQ c) A 4 kg mass is attached to an ideal spring and experiences a force whose potential energy is given by U(x) = 10 x² (all in SI units). The block is moved from x = 0 to x = 6m and then %3D released from rest. Calculate the kinetic energy of the mass and the force it experiences at X = + 4 m.

A 2 kg block is released from rest at position 1, slides down a frictionless curve, proceeds on a rough level surface and then comes to rest at position 3, compressing an ideal spring a distance x from its equilibrium position (SP EQ). a) If the spring constant is 600 N/m, S = 8 m, H = 1m, and x = 0.2m, find uk, the coefficient of kinetic friction between the level surface and the block. b) If there was no friction between the block and the horizontal surface, how much would the spring be compressed? k SP EQ c) A 4 kg mass is attached to an ideal spring and experiences a force whose potential energy is given by U(x) = 10 x² (all in SI units). The block is moved from x = 0 to x = 6m and then %3D released from rest. Calculate the kinetic energy of the mass and the force it experiences at X = + 4 m.

Physics for Scientists and Engineers: Foundations and Connections

1st Edition

ISBN:9781133939146

Author:Katz, Debora M.

Publisher:Katz, Debora M.

Chapter9: Energy In Nonisolated Systems

Section: Chapter Questions

Problem 51PQ: A small 0.65-kg box is launched from rest by a horizontal spring as shown in Figure P9.50. The block...

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