A 400-kg bear grasping a vertical tree slides down at constant velocity. What is the friction force that acts on the bear?
1 Answer
Jul 21, 2017
Explanation:
400Kg bear slides down at constant velocity
In order to velocity to be constant, the net force must be zero.
Since that constant velocity = zero acceleration
In order to balance the force due to gravity, the frictional force must be of the same magnitude as it.
You said slide down, there must be an incline.
The horizontal force acting down and parallel to the surface of the incline is:
[where