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Force and Angular Velocity in Rotating Objects

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Force and Angular Velocity in Rotating Objects

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Questions and Answers

What does the lever arm represent in the equation L = r sin θ?

The angle between the force and the radius of rotation

Distance from the axis of rotation to where the force is exerted (correct)

The net torque produced

Magnitude of the force applied

How is torque calculated?

Torque = Force ÷ Distance

Torque = Force ÷ Lever Arm

Torque = Force × Lever Arm (correct)

Torque = Force × Distance

In the context of net torque, what does T1Fg1 - T2Fg2 = 0 represent?

The net force applied

A way to increase torque

The moment of inertia

An equilibrium condition (correct)

How can you make an object rotate by adjusting torques?

By making the two torques different Signup and view all the answers

What does increasing torque do in a practical application?

Facilitates tasks by making them easier Signup and view all the answers

What is measured in newton-meters (N-m) when calculating torque?

Torque itself Signup and view all the answers

How can you increase the angular velocity of an object?

Exert a force at the outer edge of the object at right angles to the line from the center Signup and view all the answers

How does a force affect the velocity of a point object?

It increases the velocity Signup and view all the answers

What type of object is a toy top?

Extended object Signup and view all the answers

In the context of opening a door, where should you exert force to achieve the most effect with the least force?

As far from the axis of rotation as possible Signup and view all the answers

When exerting a force to open a door, where is the most effective point to apply the force?

At the doorknob near the outer edge of the door Signup and view all the answers

How does exerting a force on an extended object differ from a point object?

Exerting force on an extended object changes its angular velocity more significantly Signup and view all the answers