Question

A coffee cup of mass 230 g sits on a flat, horizontal table top. You push the cup across the table top with a constant speed of 3.2 cm/s. To do this, you must exert a horizontal force of magnitude 0.45 N.

What is the magnitude of the frictional force acting on the cup as you push it?

Answer 1

This time it's constant speed, so that means a=0, so \(\Sigma F=0\).
Do you need further help?

Answer 2

So the frictinal force is equal ro 0.45 right?

Answer 3

Yup! :)

Answer 4

thanks again

Answer 5

You're welcome :)