# Equations of motion

The problem is to determine the equation of motion for a point particle on which both the gravitational force and a friction force of magnitude
$$|\vec{F}_fr| = k|\vec{v}|$$
act and to show that when the particle starts at rest, its velocity cannot exceed mg/k.
I have attached my calculations but something is wrong. The velocity cannot increase when the incline is almost flat..?

Last edited:

quasar987