ROTATIONAL MOTION MCQ Quiz: GKFix - Bridge of Knowledge - Page 155

Question 771

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What happens to a rotating body if net torque is zero?

It stops immediately
It accelerates
It rotates with constant angular velocity
It changes axis

Question 772

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Why is the cross product used in torque calculation?

To make it scalar
To reduce complexity
Because it's always zero
Because torque depends on the angle between force and position vector

Question 773

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What is the role of the perpendicular distance in torque calculation?

It reduces friction
It measures mass
It determines the lever arm
It indicates temperature

Question 774

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What determines the direction of angular acceleration?

Mass distribution
Axis length
The rate of change of angular velocity
Gravitational pull

Question 775

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How does the work-energy principle apply in rotational motion?

Torque equals energy
Work is always zero
Work done by torque equals change in rotational kinetic energy
Energy is not conserved