Torque has minimum value when the angle between force F and force arm r is
Correct answer: A. 0o
- A. 0o
- B. 30o
- C. 60o
- D. 90o
Explanation
The torque is given by the formula τ = rF sin(θ), where τ is the torque, r is the lever arm, F is the force, and θ is the angle between the force and the lever arm. Torque has a minimum value when the angle θ is 0o because the sine of 0o is zero, resulting in zero torque. This means the force is applied in line with the lever arm, generating no rotation. The other angles, 30o, 60o, and 90o, result in greater values of torque as the sine of these angles is greater than zero, with 90o yielding the maximum torque.
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About Angular Displacement
Angular displacement measures the change in a body’s angular position and is expressed in radians or degrees, with anticlockwise and clockwise directions assigned signs. It connects to arc length, angular velocity and angular acceleration, and must be distinguished from ordinary linear displacement in rotational motion.
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