A block-brake shown below has a face width of 300 mm and a mean coeffi – McqOptions

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1.	A block-brake shown below has a face width of 300 mm and a mean coefficient of friction of 0.25. For an activating force of 400 N, the braking torque in Nm is
A.	30
B.	40
C.	45
D.	60
Answer» D. 60

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