ROTATIONAL MOTION MCQ Quiz: GKFix - Bridge of Knowledge - Page 297

Question 1481

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Why is the mass of an ideal lever considered negligible?

To make it invisible
To reduce cost
To increase speed
To ignore its weight in calculations

Question 1482

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What is the significance of the fulcrum being along the length of the lever?

It reduces mass
It increases friction
It balances weight automatically
It allows different arm lengths for mechanical advantage

Question 1483

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What happens if the sum of moments is not zero in a lever?

It moves linearly
It breaks
It becomes weightless
The lever will rotate

Question 1484

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In a seesaw, what role does the child on one side play?

Always the load
Always the effort
Neither load nor effort
Load or effort depending on position

Question 1485

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What is the torque produced by the reaction force at the fulcrum?

R × d
R × 0.5d
R
Zero