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प्रश्न
State the work energy theorem.
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उत्तर
When a moving body experiences force applied to it in the direction of that force.
- Work is done.
- K.E. rises in a manner that is proportional to the force's work. The term "work energy theory" refers to this.
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संबंधित प्रश्न
Name the type of energy (kinetic or potential) possessed by the following:
Water flowing in a river.
Give one relevant example for the following transformation of energy :
Electrical energy to light energy.
Give one example to show that the sum of potential energy and kinetic energy remains constant if friction is ignored.
A boy of mass m climbs up a staircase of vertical height h.
(a) What is the work done by the boy against the force of gravity?
(b) What would have been the work done if he uses a lift in climbing the same vertical height?
A light mass and a heavy mass have equal momentum. Which will have more kinetic energy?
(Hint : Kinetic energy K = P2/2m where P is the momentum.)
Select the renewable and non-renewable sources of energy from the following:
Diesel
Renewable source of energy is:
State the energy changes which take place when:
A car moves up a hill.
State the energy changes which take place when:
Water stored in dams rotates turbine connected to a dynamo.
What is the difference between the solid, liquid, and gaseous states of a substance?
