Physics Formal Assessment Lab5 Under Mr Tan
10 Questions
| Total Attempts: 46
This exam is about torques and law of moments. There are ten items in this quiz
Questions and Answers
- 1.In a seesaw, torque is NOT affected by
- A.
Force applied
- B.
Distance from the fulcrum
- C.
Time spent on the seesaw
- D.
Weight
- E.
Acceleration due to gravity
- 2.The ability of a force to cause rotation
- A.
Acceleration
- B.
Law of moments
- C.
Torque
- D.
Both b and c
- E.
None of the above
- 3.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?
- A.
2.9 m from the fulcrum
- B.
3.5 m from the fulcrum
- C.
1.5 m from the fulcrum
- D.
1.6 m from the fulcrum
- E.
0.4 m from the fulcrum
- 4.The sum of clockwise torque should be equal to the sum of the counterclockwise torque. This is known as the
- A.
1st condition of equilibrium
- B.
2nd condition of equilibrium
- C.
3rd condition of equilibrium
- D.
4th condition of equilibrium
- E.
5th condition of equilibrium
- 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?
- A.
1m
- B.
2m
- C.
3m
- D.
4m
- E.
5m
- 6.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.
- A.
1477
- B.
4500
- C.
2100
- D.
2500
- E.
2058
- 7.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?
- A.
2m from the 15 N box
- B.
1 m from the 25 N box
- C.
1.5 m from the 25 N box
- D.
0.55 from the 15 N box
- E.
None of the above
- 8.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?
- A.
4.52 kg
- B.
4.52 N
- C.
73.4 kg
- D.
84.11 kg
- E.
53.4 kg
- 9.What is the torque (in Nm) applied by 60.0 kg person 5 meters from the fulcrum?
- A.
1780
- B.
2940
- C.
3522
- D.
6197
- E.
4558
- 10.What is the torque (in Nm) applied by 100 N person 10.0 meters from the fulcrum?
- A.
500
- B.
1000
- C.
1500
- D.
2000
- E.
10000
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