A block of mass 1. 70 kg is accelerated across a rough surface by a light cord p

Question

A block of mass 1. 70 kg is accelerated across a rough surface by a light cord passing over a small pulley as shown in the figure below. The tension T in the cord is maintained at 10. 0 N, and the pulley is 0. 130 m above the top of the block. The coefficient of kinetic friction is 0. 390. Determine the acceleration of the block when x = . 400 m. m/s2 Describe the general behavior of the acceleration as the block slides from a location where x is large to x = 0. increasing, then decreasing decreasing, then increasing no change Find the maximum value of the acceleration and the positions for which it occurs. x = m a = m/s2 Find the largest value of x for which the acceleration is zero. m

Explanation / Answer

Tsinq - UN = M a Tcosq +N = Mg tanq = 0.13/ 0.4

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