if you push a heavy box which is rest; you must exert some force to start its motion.However once the box is sliding you apply a lesser force to maintain that motion. why?
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At the point when the box is still, there is a friction force between the box and the surface, which known as the static friction. Thusly, to begin the box movement we have to push on a heavy box some force to win the greatest static friction (fs= µsn) which keep the box still.
once the box is in movement you require a little power to keep up that movement on the grounds that for most materials µs>µk; in this manner, static friction is generally greater than kinetic friction.
Kinetic friction is a force that demonstrations between moving surfaces. An object that is being moved over a surface will encounter a force the other way as its movement.
once the box is in movement you require a little power to keep up that movement on the grounds that for most materials µs>µk; in this manner, static friction is generally greater than kinetic friction.
Kinetic friction is a force that demonstrations between moving surfaces. An object that is being moved over a surface will encounter a force the other way as its movement.
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