If we double the moment arm, the value of torque becomes:
Correct answer: C. Two-times
- A. Half
- B. Three-times
- C. Two-times
- D. Four-times
Explanation
A moment arm is basically defined as the length between a joint axis and the line of force acting on that joint. Torque=Force×Moment Arm τ=r×F Hence, when the moment arm is doubled, the torque is also doubled
This question appeared on the UHS MDCAT 2016 paper, which you can sit online with every answer explained.
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