Question

A coolie X carrying a load on his head climbs up a slope and another coolie Y carrying the same load but on a frictionless surface. Who does more work ?

Answer 1

Answer:cookie X

Explanation:

Answer 2

Explanation:

Coolie X carrying a load up a slope will do more work as this works involve a change in potential energy, kinetic energy and loss of energy due to friction. Work done in carrying the load in horizontal frictionless surface does not involve change in potential energy and work done by the friction is also zero.