Table of Contents
Can the work done by kinetic friction is zero?
Work done by kinetic friction on a body is never zero.
Can the work done by kinetic friction on an object be positive or zero?
Generally work done by the kinetic friction on an object is negative because the displacement is always opposite the friction force. But in some cases can be positive or zero. But there is no movement along this forward kinetic friction force so work is zero.
Is work done by kinetic friction?
Kinetic friction is a non-conservative force, and so has no associated potential energy. An internal kinetic friction force must therefore be accounted for as work done on the system.
Is work done by kinetic friction is always negative?
Work done by kinetic friction on a system is always negative on the system.
What if friction is reduced to zero?
No, we cannot have zero friction surfaces. Even if we have used a lot of lubricants. We can reduce the friction but we can never reduce it to zero because every surface will still have minor in them. Due to friction force a body stops.
Will work done equal kinetic energy?
The work-energy theorem states that the net work done by the forces on an object equals the change in its kinetic energy.
Can there be 0 friction?
No, we cannot have zero friction surfaces. We can reduce the friction but we can never reduce it to zero because every surface will still have minor in them. A frictionless surface is not possible is not possible because the surface cannot have a zero friction surface.
Can the coefficient of friction be zero?
Can kinetic friction be zero work done with zero displacement?
PERIOD! Kinetic friction occurs only when the body undergoes displacement with contact with any surface. So saying zero displacement can also be zero work done. But then again, displacement is an important factor to work done anyway because when displacement is zero the force too is zero, hence is a force zero work zero case.
Is work done by kinetic friction negative or positive?
Generally work done by the kinetic friction on an object is negative because the displacement is always opposite the friction force. But in some cases can be positive or zero. For example, suppose one block is kept over other and lower block starts to move with some acceleration in such a way that upper block slides over the lower block.
Why work done by kinetic friction is zero in a boat?
If a body is moving in a closed path , there won’t be any displacement hence making work done zero. When a man moves on a boat (in still water ) , work done by kinetic friction with respect to ground is 0 as there is no displacement with respect to ground.
Does friction do work in the reference frame?
In the reference frame of the interface between two surfaces, static friction does no work, because there is never displacement between the surfaces. In the same reference frame, kinetic friction is always in the direction opposite the motion, and does negative work. However, friction can do positive work in certain frames of reference.