Lesson: Motion of Rolling ObjectsPhysics
In this lesson, we will learn how to calculate the motion of rolling objects by referring to the conservation of rotational kinetic energy and of angular momentum.
Sample Question Videos
A spherical boulder with a mass of 20 kg and a radius of 20 cm rolls down the side of a hill, starting from rest. The hill is 15 m high.
What is its angular momentum when it is halfway down the hill?
What is its angular momentum when it is at the bottom?
A solid cylinder of mass 40.0 kg is rolling across a horizontal surface at a speed of 6.00 m/s. What is the work done by the surface on the cylinder to bring the cylinder to rest?
A marble that is initially at rest rolls down a slope inclined at below the horizontal for a time interval of 3.0 s.
What is the magnitude of the acceleration of the marble downward along the incline? Answer to a precision of two significant figures.
What distance downward along the incline does the marble travel in 3.0 s?