# While siting in a swivel chair , you push against the floor with your heel to make the chair...

## Question:

While siting in a swivel chair , you push against the floor with your heel to make the chair spin . The {eq}7.0 N {/eq} frictional force is applied at a point {eq}40 cm {/eq} from the chair's rotation axis , in the direction that causes the greatest angular acceleration . If that angular acceleration is {eq}1.8 rad/s^2 {/eq} , what is the total moment of inertia about the axis of you and the chair ? .

## Torque

The term torque is defined as a measure that is able to make any object rotate when applying on it. Mathematically, the torque is determined as a product of a moment of inertia and the angular acceleration of the rotating body.

## Answer and Explanation:

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**Given data:**

- The frictional force applied on the chair is: {eq}F_f = 7\;{\rm{N}} {/eq}.

- The distance at which the friction force is applied is:...

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Chapter 3 / Lesson 13After watching this video, you will be able to explain what torque is and use an equation to calculate torque in simple situations. A short quiz will follow.