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Physics Chemistry

Engineering :: Applied Mechanics


  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]. 1250 N[B]. 6750 N
[C]. 9860 N[D]. 13500 N
[E]. 20250 N    

Answer: Option B


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