Physics Formal Assessment Lab5 Under Mr Tan

1. In a seesaw, torque is NOT affected by

Force applied

Distance from the fulcrum

Time spent on the seesaw

Weight

Acceleration due to gravity

2. What is the torque (in Nm) applied by 60.0 kg person 5 meters from the fulcrum?

1780

2940

3522

6197

4558

3. What is the torque (in Nm) applied by 100 N person 10.0 meters from the fulcrum?

500

1000

1500

2000

10000

4. What is the torque (in Nm) applied by a 686 N person about the front support of a diving board, 3.0 m from the support.

1477

4500

2100

2500

2058

5. A 2.0 kg board serves as a seesaw for two children. One child has a mass of 30 kg and sits 2.5 m from the pivot point. At what distance from the pivot must a 25 kg child place herself to balance the seesaw?

1m

2m

3m

4m

5m

6. Noynoy and Manny are on a see-saw. Noynoy is 73kg and is 2.3m away from the center of the see-saw. Lily is 3.1m away. The see-saw is balanced. What is Manny's mass?

4.52 kg

4.52 N

73.4 kg

84.11 kg

53.4 kg

7. The ability of a force to cause rotation

Acceleration

Law of moments

Torque

Both b and c

None of the above

8. The sum of clockwise torque should be equal to the sum of the counterclockwise torque. This is known as the

1st condition of equilibrium

2nd condition of equilibrium

3rd condition of equilibrium

4th condition of equilibrium

5th condition of equilibrium

9. Roger, who has a mass of 55.0 kg, is sitting on the edge on the left side of a 4.00 m seesaw with the fulcrum found in the middle. Where should John sit on the right side if he has a mass of 75.0 kg?

2.9 m from the fulcrum

3.5 m from the fulcrum

1.5 m from the fulcrum

1.6 m from the fulcrum

0.4 m from the fulcrum

10. A 15 N box and a 25 N child sit at opposite ends of a 4.0 m seesaw pivoted at its center. Where should a third box whose weight is 20 N sit in order to balance the seesaw?

2m from the 15 N box

1 m from the 25 N box

1.5 m from the 25 N box

0.55 from the 15 N box

None of the above