Advertisements
Advertisements
प्रश्न
The power of a motor is 40 kW. At what speed can the motor raise a load of 20,000 N?
Advertisements
उत्तर
Power = 40 KW
Force = 20,000 N
Power = force × Speed
Speed =`"Power"/"Force"`
`=(40" KW")/(20,000)`
`=(40,000)/(20,000)`
= 2 m/s-1.
APPEARS IN
संबंधित प्रश्न
A force acts on a body and displaces it by a distance S in a direction at an angle θ with the direction of the force. What should be the value of θ to get the maximum positive work?
The S.I. unit of energy is .............
No work is done by a force if the body
Name the forms of energy which a wound-up watch spring possesses.
Explain by an example that a body may possess energy even when it is not in motion.
Is work done a scalar or a vector physical quantity?
What do you understand by 'potential energy' and 'Kinetic energy'? Give three examples of each to illustrate your answer.
What are the advantages and disadvantages of using solar cells for producing electricity?
