A block is placed on the top of a ramp as shown in the figure below. The block i

Question

A block is placed on the top of a ramp as shown in the figure below. The block is released from rest on the frictionless incline. When the block reaches the flat portion of the table it begins to feel a frictional force with the table characterized by a coefficient of kinetic friction ?k. Which of the following statements about the energy and work of the system could NOT be correct? 1. Along the incline, the potential energy of the system decreases from its initial value. 2. the sum of the potential energy and the kinetic energy of the block at any point along the entire path of travel is conserved. 3. The block

Explanation / Answer

the sum of the potential energy and the kinetic energy of the block at any point along the entire path of travel is conserved. as due to frictonal force this cant be true

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