Learn how to use force diagrams to analyze the forces and torques acting on a rigid system. Explore how force and torque can lead to rolling in different situations.

An introduction to torque, a force that causes rotation. Understand how torque is calculated as the product of force and distance, and how it differs from work.

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Examine how torque in rotational motion is analogous to force in linear motion. Learn how torque relates to force, position, and angle, and how force diagrams can be used to analyze forces and torques …

Review the concept of torque and how it is affected by the applied force and lever arm.

A Ferris wheel is modeled below. Passenger cabins hang from the wheel at rest. Four of the cabins are labelled. Assume all of the cabins are empty and have the same mass. From greatest to least, rank …

A torque is the rotational equivalent of a force. When a torque is applied to an object it causes the object to rotate. Learn how forces create torques and how to calculate the net torque on a rotating object.

Which of the following diagrams correctly models each force vector starting on, and pointing away from, the point where it's exerted on the disk as it rolls down the ramp?

Even if it is exerting a million pounds or a million Newtons, its moment of force, or its torque, would be zero because its moment arm distance is zero, so we can ignore it, which makes things simple.

Moments and torque are related but not the same thing. For a rotating object, the moment is established from the axis of rotation, ie. the imaginary line about which the object is rotating.