Question

WHAT IS THE WORK DONE BY THE FORCE OF GRAVITY ON A STELLITE MOVING ROUND THE EARTH ? JUSTIFY YOUR ANSWER.

Answer 1

if think the work done is zero because the displacement is zero as it moves in a circular path

Answer 2

HI HERE IS UR ANSWER 

when a satellite moves around the earth in a circular path ,the force gravity acts on it towards the centre .the force  of gravity of the earth and the direction of movement of the satellite are perpendicular to each othr .
∴W=FORCE (DISPLACEMENT )(co 90°).
therefore work done =0 j