Advertisements
Advertisements
प्रश्न
The power of a motor is 40 kW. At what speed can the motor raise a load of 20,000 N?
संख्यात्मक
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.
shaalaa.com
क्या इस प्रश्न या उत्तर में कोई त्रुटि है?
APPEARS IN
संबंधित प्रश्न
When is work said to be done by a force?
What is the work done when the object acted upon by a force remains at rest?
What should be the angle between the directions of the displacement and the applied force so that the work done is zero?
Write an expression for work done by a force depends?
Can every force produce work?
What is the P.E. of a body lying on the surface of the earth?
Name the practical unit of power.
Name the physical quantity whose SI unit is Nm.
Fill in the boxe to show the corresponding energy transformation.
Calculate the work done when:
A 5 kg weight is lifted 10 m vertically. (g = 9.8 m/s2)
