Questions
A man of 70Kg mass carrying a load of 30kg walks up in 10S. If the no. of steps is 30 and width and height of each step is 10cm and 8cm resp. efficiency of the man is
detailed solution
Correct option is B
η=mm+M×100 =30100×100=30%Talk to our academic expert!
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If the water falls from a dam into a turbine wheel 19.6 m below, then the velocity of water (in m/s) at the turbine is
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