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संबंधित प्रश्न
A force of 50 N acts on a body and moves it a distance of 4 m on horizontal surface. Calculate the work done if the direction of force is at an angle of 60° to the horizontal surface.
State the conditions of equilibrium for a rigid body.
What do you mean by a kilo joule?
Name the physical quantity associated with the 'rate of doing work'.
An electric motor drives a machine which lifts a mass of 4 kg through a height of 10 m in 5 s at a constant speed. Assuming g = 10 ms-2, calculate
(i) the amount of work done, (ii) the power of the machine.
Fill in the boxe to show the corresponding energy transformation.
State the energy changes which take place when A piece of magnesium wire is burnt in a jar of oxygen.
Give an example
Electrical energy changes of sound energy.
What do you understand by the term energy? Is energy a scalar or vector? How is the energy possessed by a body measured?
