Torque and Angular Momentum

A wrench is used to tighten a nut. A 15N perpendicular force is applied 50cm away from the axis of rotation, and moves a distance of 10 cm as it turns. What is the torque applied to the wrench?

• 7.5 Nm
• 1.5 Nm
• 750 Nm
• 150 Nm

Tags

NGSS.HS-PS2-1

The easiest way to open a heavy door  is by applying the force

• Near the hinges
• In the middle of the door
• At the edge of the door far from the hinges
• At the top of the door

Tags

NGSS.HS-PS2-1

What is the Unit for Torque

• Nm
• N
• W
• J

Torque is the product of a force exerted on an object times the lever arm.

• True 
• False

What force does not cause any torque?

• Force perpendicular to the fulcrum.

• Force horizontal to the planck.

• Force slightly off center of the fulcrum

• Forces at a 45 degree angle to the fulcrum, and not on the fulcrum

A construction worker is worried about applying too much torque to a bolt using his wrench.  What could he do to reduce his torque on the bolt?

• Increase the length of the wrench
• Increase the force on wrench
• Reduce the length of the wrench
• Reduce the friction between the bolt and wrench

Tags

NGSS.HS-PS2-1

What direction is the torque acting with respect to post A?

• clockwise

• Counter clockwise

• Neither Direction

• Depends on the mass of the diver

How do you get the maximum torque?

• longer lever arm and more force at an acute angle
• shorter lever arm with more force perpendicularly
• shorter lever arm and more force perpendicularly
• longer lever arm with more force perpendicularly

A torque acting on an object tends to produce

• a center of gravity

• rotation

• linear motion

• equilibrium

• velocity

Which wrench will create more torque given the same amount of force?

• 5 inch long
• 6 inch long
• 7 inch long
• 8 inch long