Question

Two difference between work done against gravity and work done against friction

Answer 1

Answer:

if there is not motion produced in body, the works become zero. We can do work against gravity or against friction. when we lift something then it is work done against gravity and when we slide something then it is work done against friction..

Answer 2

Two differences between work done against gravity and work done against friction are:

Work against Gravity-

• Gravity is a force that pulls you down. When you operate against gravity, the force exerting on that thing is directed upward.When you lift weights, for example, you are working against gravity. You exert upward thrust.

• Work is done on an object when a force operates on it and causes it to move along a surface; it is also countered by friction between the surface and the object. Because they have opposing effects, We may state that work is complete. "against" the friction.

Work against friction-

• Friction is the force that acts as a barrier between an object's motion, and it always points in the opposing direction of movement. When a thing slides over a table, for example, it works against friction. Friction will finally bring it to a halt. As a result, you could argue that friction has worked against it.

• W = Fd = mgh is the work done on the mass. Potential gravitational energy (PEg) put into (or acquired by) the object-Earth system is what we're talking about here. This energy is linked to the condition of separation between two things that are drawn to one another by gravity.