Question

You push a heavy crate. At first it doesn't move. You push harder, and it finally starts to move, but you still have to exert some force to keep it moving at a constant velocity. Explain

Answer 1

At first you had to exert a large force to overcome static friction. After the crate started to move, you still had to exert a smaller force to overcome sliding friction.

Answer 2

Cool, elaborate please

Answer 3

You want me to be more detailed?

Answer 4

Yes. Not that I don't understand. I just wanted to know what you thought. Say for instance, you said "Static Friction". When you stated it, it made me start thinking about the relation of Earths gravity on an object.

Answer 5

That what I meant , I just don't know if I used the right term. To overcome friction, you have to put in work or apply a force to it to keep it at it's constant velocity.