Partner Practice: Torque

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

A 800N man is playing on a seesaw with son who has a weight of 200N. If the child is sitting 3 meters away, how far will the man have to sit to balance the seesaw?

• 0.75m
• 3m
• 1.5m
• 1m

Tags

NGSS.MS-PS2-2

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

When an object is experiencing a net torque

• it is in dynamic equilibrium.
• it is in static equilibrium.
• it is rotating.
• it is translating.

You apply force to a wrench to tighten a bolt. The wrench breaks in half. Select the best answer for what happens next. Assume the force applied remains constant.

• The torque is now half of what it was, because torque and distance are inversely proportional
• The torque is now half of what it was, because torque and distance are directly proportional
• The torque is now double of what it was, because torque and distance are inversely proportional
• The torque is now double of what it was, because torque and distance are directly proportional

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

A state of equilibrium is also seen below. Each of the cars weighs the same 9800 N. Despite the fact that there is only one car on the left-hand side that is 9 m from the fulcrum, the torques balance because, the cars on the right-hand side, are ____meters from the fulcrum.

• 4.5 m

• 3 m

• 1 m

• 2 m

Tags

NGSS.MS-PS2-4

A seesaw is unbalanced with two people of different masses sitting equal distances from the center. Which of the following will result in equilibrium?

• The larger person moving further away from the center.
• Moving the smaller person closer to the center.
• Moving the smaller person further from the center.
• Making the larger person do nothing.

Tags

NGSS.MS-PS2-2

NGSS.MS-PS2-1

Which will produce more torque to loosen the lug nut?

• A
• B
• They are the same