Quiz 1 - 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

You push lever with a perpendicular force of 40 N. You push 0.233 meters from the pivot point. Calculate the torque applied to the lever

• 9.3 N∙m

• 172 N∙m

• 39.7 N∙m

• 4.7 N∙m

You push a wrench with a perpendicular force of 35 N. You hold the wrench handle at 0.40 m from the pivot point. Calculate the torque applied to the wrench.

• 14 N∙m

• 87.5 N∙m

• 34.6 N∙m

• 219 N∙m

Does a bridge anchored resting on two pillars have any torque?

• No, it isn't moving
• Yes, but it is at equilibrium
• Yes, but it will soon break because of the torque
• No, Bridges can't have torque

What is the weight of the package?

• 5 N
• 10 N
• 15 N
• 20 N

Tags

NGSS.MS-PS2-2

NGSS.MS-PS2-4

Which requires more muscle strength (pull by the muscle) to lift a 25 pound dumbbell?

• An arm with a longer forearm
• An arm with a shorter forearm
• The length doesn't matter

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 car on the left-hand side, is ____meters from the fulcrum, compared to the cars on the right-hand side.

• 4.5 m
• 3 m
• 1 m
• 2 m

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