A box is moved from a shelf at height above the floor to a platform at height

PHYSICS · Multi-part · CBSE · Physics · Work and Energy · Work and Energy

Problem

5\,\text{kg}

box is moved from a shelf at height

1\,\text{m}

above the floor to a platform at height

4\,\text{m}

. The path followed is: (i) lifted vertically from

1\,\text{m}

2\,\text{m}

, (ii) carried horizontally for

3\,\text{m}

at the

2\,\text{m}

level, and (iii) lifted vertically from

2\,\text{m}

4\,\text{m}

. For

g = 9.8\,\text{m\,s}^{-2}

, (a) (a) Segment (i) (b) (a) Segment (ii) (c) (a) Segment (iii) (d) (b) Total work