A particle of mass is taken from point to point by moving vertically upward through

PHYSICS · Subjective · A Level · Physics · Mechanics and materials · Mechanics and materials

Problem

A particle of mass

2\,\text{kg}

is taken from point

A

to point

B

by moving vertically upward through

3\,\text{m}

, then horizontally through

5\,\text{m}

to point

C

, and finally returned straight to

A

along the line

CA

. Show that the net work done by the gravitational force over the complete closed path

ABC

is zero.