Question

Work done 10 example​

Answer 1

1 The work done by Gravitational force when we climb on a tree

2 the work done by frictional force of air when a ball is falling downwards.

3 the work done the buoyant force when a coin is sinking

please mark as brilliant answer

Answer 2

if the force is perpendicular to the direction then the work done will be zero
Example earth moves around the sun is with centripetal force and with tengant directions so it is zero
if the force and perpendicular are on both same direction then the work done will be positive
Example an object and force both are moving in the same direction to the work done is positive
if the force and direction both around the opposite direction then the work done will be negative
Example an object and the force motor moving in the opposite direction to the work done is negative