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Objective: To identify the variables that affect the amount of torque, the direction of rotation caused by a torque, and the sign on torque.

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Torque

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Ranking Tasks 4 Questions Based on a diagram showing the magnitude, direction, and placement of a force, rank three situations according to the amount of torque.

Pick from among the three activities - Ranking Tasks; Torque and Rotation; and Lever Arm.

Torque and Rotation Completed

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Torque and Rotation 6 Questions Given a diagram showing the force on a seesaw, determine the direction of rotation and the +/- sign on the torque.

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Lever Arm Completed

Lever Arm 3 Questions Given the force and the axis of rotation, determine the lever arm.

Ranking Tasks Completed

You have done it! You have successfully analyzed each of the situations in the Ranking Tasks activity.

You have done it! You have successfully analyzed each of the situations in the Lever Arm activity.

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You have done it! You have successfully analyzed each of the situations in the Torque and Rotation activity.

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Activity:

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Ranking Tasks

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Torque and Rotation

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Turntable Physics

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Level:

Lever Arm

Anita Getin pulls on the handle of a door to swing it about its hinge (ⓧ). The direction of the force vector is shown in red (and labeled F). The torque (τ) resulting from this force is calculated using the equation     τ = a*F   where a is the lever arm (a.k.a. moment arm). Which of the blue arrows - labeled A, B, C, D, and E - represent the lever arm?

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