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Lever Equilibrium Condition - Quiz

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In physics, the "Moment Arm" refers to:

Lever Equilibrium Condition - Quiz - Quiz Questions

Check your mastery of moment arms, resistance arms, and equilibrium conditions through the following exercises.

1. In physics, the "Moment Arm" refers to:

A. The distance from the fulcrum to the point of application of the force
B. The perpendicular distance from the fulcrum to the line of action of the force
C. The distance from the starting point to the ending point of the force
D. The total length of the lever

2. The lever has 2 weights hanging at the 3rd mark on the left. If you want to balance it at the 2nd mark on the right, how many weights should be hung?

A. 1 weight
B. 2 weights
C. 3 weights
D. 4 weights

3. As shown, when using tweezers to pick up a hard object, tweezers belong to:

A. Force-saving lever
B. Distance-saving (Force-multiplying) lever
C. Equal-arm lever
D. Cannot be determined

4. In this simulation experiment, if the lever tilts to the left, it indicates:

A. The left torque is greater than the right torque
B. Too few weights are hung on the left
C. The right torque is greater than the left torque
D. The lever fulcrum position has shifted

5. True or False: Archimedes once said "Give me a place to stand, and I shall move the earth", which reflects the immense power of a force-saving lever.

True
False

6. To balance the lever horizontally, which of the following operations is NOT feasible:

A. Decrease weights on the left
B. Increase weights on the right
C. Move the left weights to the left
D. Move the right weights to the right

7. In the experiment, we always recommend adjusting the lever to balance horizontally first, mainly to:

A. For aesthetics
B. Convenient to read the moment arm value directly from the lever
C. Eliminate the effect of the lever's own weight on the experiment
D. All of the above

8. What type of lever is a fishing rod?

A. Force-saving lever
B. Distance-saving lever
C. Equal-arm lever
D. Cannot be determined