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संबंधित प्रश्न
Write an expression for the work done when a force is acting on an object in the direction of its displacement.
What is the work done by the moon when it revolves around the earth?
The moon is revolving around the earth in a circular path. How much work is done by the moon?
Define 1 joule of energy.
MULTIPLE CHOICE TYPE
In an electric cell which in use, the change in energy is from:
What should be the angle between the direction of force and the direction of motion of a body so that the work done is zero?
Name five appliances or machines which use an electric motor.
Choose one or more correct alternatives.
Joule is the unit of ______.
- force
- work
- power
- energy
Draw a neat labeled diagram to show the direction of two forces acting on a body to produce rotation in it. Also mark the point about which rotation takes place.
What do you mean by a kilo joule?
State the energy changes which take place when A stone dropped from the top of a cliff reaches the ground after some time.
A body of mass 60 kg has the momentum 3000 kgm/s-1. Calculate: the speed of the body.
How much energy is gained by a box of mass 20 kg when a man, runs carrying the box with a speed of 3 m/s-1 to catch the bus?
Define force. Is force a scalar or a vector quantity?
An electric motor of power 100 W is used to drive the stirrer in a water bath. If 50% of the energy supplied to the motor is spent in stirring the water. Calculate the work done on the water in one minute.
The weights of two bodies are 2.0 N and 2.0 kgf respectively what is the mass of each body?
