Question

Two blocks of masses m1 = 1.5 kg and m2 = 3.0 kg are connected with a string that passes over a very light pulley (Figure 1). Friction in the pulley can be ignored. Block 1 is resting on a rough table and block 2 is hanging over the edge. The coefficient of friction between the block 1 and the table is 0.70 (assume static and kinetic friction have the same value). Block 1 is also connected to a spring with a constant 300 N/m. In the initial state, the spring is relaxed as a person is holding block 2, but the string is still taut. When block 2 is released, it moves down for a distance d until it stops (the final state). Explain why block 2 eventually stops moving. Match the words in the left column to the appropriate blanks in the sentences on the right. Make certain each sentence is complete before submitting your answer. ResetHelp Both blocks will come to rest when the in elastic potential energy of the spring and the change in the energy due to kinetic friction equal the in energy of block 2.

find the distance d

Answer 1