A machine of efficiency 80% or use to rise a load of body of mass 75kg through a vertical height of 3 metre in 30 seconds calculate the power input take ( g =10mls)
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I need answer
If you think g is in m/s, forget it
I will assume g= about 10 m/s^2
work accomplished = weight * distance up = m g h = 75 * 10 * 3
= 2250 Joules
work put in = 2250 / 0.80 = 2812.5 Joules
power = work/time = 2812.5 Joules / 30 s = 93.75 Watts
I will assume g= about 10 m/s^2
work accomplished = weight * distance up = m g h = 75 * 10 * 3
= 2250 Joules
work put in = 2250 / 0.80 = 2812.5 Joules
power = work/time = 2812.5 Joules / 30 s = 93.75 Watts
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