Physics · Theory of Machines
A mechanical brake is considered self-locking if:
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 1The friction force helps to apply the brake and the required braking force is zero or negative✓
- 2The friction force is zero
- 3The normal force acting on the drum is zero
- 4The friction angle is greater than the angle of wrap
Correct answer
The friction force helps to apply the brake and the required braking force is zero or negative
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