Two blocks are attached by a thin inextensible string over a frictionless, massless pulley. there is a frictional force between the block on the incline and the incline. the acceleration of gravity is 9.8 m/s 2 . 13 kg 13 kg µ t 1.1 m/s 0 m/s 2 39◦ calculate the magnitude of the frictional force acting on the block on the incline. answer in units of n.

Aball has an initial velocity of 3 m/s. if there is no friction, what is the highest it could roll?

Which of the following best describes the circuit shown below?

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.