ROTATIONAL MOTION MCQ Quiz: GKFix - Bridge of Knowledge - Page 291

Question 1451

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What is the primary purpose of a lever as described in the text?

To generate electricity
To store energy
To measure time
To balance forces using the principle of moments

Question 1452

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How is the mechanical advantage related to arm lengths?

M.A. = d1/d2
M.A. = d1 + d2
M.A. = d1 × d2
M.A. = effort arm / load arm

Question 1453

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What is the torque when force is applied at the fulcrum?

F
F × d
Infinite
Zero

Question 1454

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In a balance beam, what is adjusted to achieve equilibrium?

Length of beam
Color of weights
Temperature
Position of weights

Question 1455

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What is the significance of the cross product in torque calculation?

It adds the vectors
It finds average
It reduces error
It gives the magnitude and direction of torque