A sled is pulled along a straight horizontal track

PHYSICS · Subjective · CBSE · Physics · Work, Energy and Power · Work, Energy and Power

Problem

A sled is pulled along a straight horizontal track. The horizontal pulling force varies with displacement as follows: (i) For

0\le x<2\,\text{m}

F_1=6x

N. (ii) For

2\,\text{m}\le x\le 5\,\text{m}

F_2=12-2x

N. If the sled covers the total

5\,\text{m}

4.0\,\text{s}

, determine the average power supplied by the pulling force during the motion.