Question

Why does a horse pull its cart harder during the first few steps of its motion?

Answer 1

Limiting friction:

1. The horse has to pull the cart harder in the first steps of his motion because he is fighting against the highest value of static friction that comes into play when a body is just at the point of sliding over the surface of another body.
2. The phrase used to describe this type of friction is "limiting friction."
3. The horse will deal with dynamic friction, which happens when one surface moves over another while in contact, once the motion starts.
4. Dynamic friction is lesser than limiting friction.