H

Harikesh • 8.04K Points
Tutor III 

Q. A single purchase crab has a handle 45 cm long and a drum of 25 cm diameter. The pinion has 30 teeth and spur has 150 teeth. The efficiency of the machine is 75%. If the maximum force that can be applied is 500 newtons, the maximum load that can be lifted will be

(A) 9860 N
(B) 6750 N
(C) 20250 N
(D) 1250 N
Correct : Option (B)

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