Strength of Materials
Which of the following do not have identical dimensions?

Torque and work
Moment of a force and angular momentum
Momentum and impulse
Torque and energy

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Strength of Materials
Limiting force of friction is the

Ratio of limiting friction and normal reaction
the friction force acting when the body is in motion
The friction force acting when the body is just about to move
Tangent of angle between normal reaction and the resultant of normal reaction and limiting friction

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