Torque

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

Calculate the torque produced by 75- N perpendicular force at the end of a 0.20 m long wrench.

• 15 Nm

• 1.5 Nm

• 15.0 Nm

• 16 Nm

What is the weight of the package?

• 5 N
• 10 N
• 15 N
• 20 N

Tags

NGSS.MS-PS2-2

NGSS.MS-PS2-4

What is the weight of the package?

• 5 N
• 10 N
• 15 N
• 20 N

Tags

NGSS.MS-PS2-2

NGSS.MS-PS2-4

Suppose a doorknob is placed at the center of a door. Compared with a door whose knob is located at the edge, what amount of force must be applied to this door to produce the torque needed to open it?

• 1/4 as much

• 1/2 as much

• Twice as much

• Four times as much

Two masses of mass 10.0 and 6.0 kg are hung from massless strings at the end of a light rod. The rod is virtually weightless. A pivot (fulcrum) is placed off center and the system is free to rotate. If the 6.0 kg mass is 4.0 m away from the pivot, how far away is the 10.0 kg mass if the system is not rotating?

• 0.42 m

• 2.4 m

• 4.8 m

• 4.2 m

F₁ is 30 N acting 2 m away from the pivot. F₂ is 10 N, how far away from the pivot does it act if the object is in equilibrium?

• 2 m

• 4 m

• 6 m

• 8 m

The elephants weight force is 4000N acting 0.5 m away from the pivot. How much force is the mouse using at 0.70 m from the pivot to keep the seesaw in equilibrium?

• 2857.14

• 2800

• 4376.34

• 2000