A horse attached to a cart. A short blue arrow over the cart is labeled F subscript f = 60 N. A long blue arrow over the horse is labeled F subscript P = 450 N. What is the net force acting on the buggy?

N

The net force is pointing to the
right
.

Consider a small frictionless puck perched at the top of a fixed sphere of radius r. if the puck is given a tiny nudge so that it begins to slide down, through what vertical height will it descend before it leaves the surface of the sphere? [hint: use conservation of energy to find the puck's speed as a func e conservation of energy to find the puck's speed as a function of its height at what value of this normal force does the puck leave the sphere? ] here on the puck.