ROTATIONAL MOTION MCQ Quiz: GKFix - Bridge of Knowledge - Page 388

Question 1936

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Under what condition is torque zero?

When force is perpendicular
When r is large
When F is large
When force is parallel to the position vector

Question 1937

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What factors determine the magnitude of torque?

Only force
Only distance
Only angle
Force magnitude, distance from axis, and angle of application

Question 1938

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What is another name for moment of force?

Work
Energy
Power
Torque

Question 1939

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What makes a force most effective in rotating a door?

Pushing near hinge
Pulling parallel to door
Applying it perpendicularly at the outer edge
Pushing at center

Question 1940

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Why is force applied at the hinge ineffective in opening a door?

Because of high friction
Because the door is heavy
Because the moment arm is zero
Because force is small