A horse has to pull harder during the start of the motion than later. Explain.
Answers
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❤. Before starting the motion , Horse has static friction and later it will be converted into kinetic friction.
❤. But , static friction is more than kinetic friction (fms > fk) .
❤. Hence , Horse has to exert a greater force during the start of the motion than later.
Answer:
A horse has to pull harder during the start of the motion than later because the limiting friction is greater as compared to dynamic friction.
Explanation:
Because the horse has to work towards the maximum value of static friction that comes into play while a body is simply on the verge of sliding over the surface of some other body, the horse has to tug the cart harder in the course of the preliminary few steps of his movement. This is referred to as the limiting friction.
The horse desires to attract the cart harder in the course of the primary few steps of his movement due to the fact he has to fight towards the limiting friction, however after the movement begins, he has to work towards the dynamic friction, that's much less than the limiting friction. As a result, the horse will ought to exert extra force in the course of the preliminary few steps of pulling the cart.