Advertisements
Advertisements
प्रश्न
If the power of a motor is 100 kW, at what speed can it raise a load of 50,000 N?
Advertisements
उत्तर
Power is the product of force and velocity.
P = Fv
`:. v = P/F = (100 xx 10^3)/50000 = 2 ms^(-1)`
APPEARS IN
संबंधित प्रश्न
Give the expression for mechanical advantage of an inclined plane in terms of the length of an inclined plane.
How is kilowatt hour related to joule?
Name the quality which is measured in kWh.
State the factors on which moment of force about a point depends.
What do you mean by a centrifugal force?
It takes 20 s for a person A of mass 50 kg to climb up the stairs, while another person B of same mass does the same in 15 s. Compare the power developed by the persons A and B.
State the condition when the work done by the force is positive
For the following scenario, state whether the work done by gravity is positive, negative, or zero.
A person walks on a levelled road.
For the following scenario, state whether the work done by gravity is positive, negative, or zero.
A car in neutral gear is coming down the slope.
