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संबंधित प्रश्न
Name a common device where a gear train is used
State two factors on which the work done on a body depends.
MULTIPLE CHOICE TYPE
In an electric cell which in use, the change in energy is from:
How much energy is gained by a box of mass 20 kg when a man, carrying the box waits for 5 minutes for a bus?
State the SI unit of work.
What are the units of (a) work, and (b) energy?
Write the formula for work done on a body when the body moves at an angle to the direction of force. Give the meaning of each symbol used.
How much work is done when a force of 2 N moves a body through a distance of 10 cm in the direction of force?
Complete the following sentences:
Kilowatt is the unit of ....... and kWh is the unit of
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.
A woman pulls a bucket of water of total mass 5 kg from a well which is 10 s. calculate the power used by her.
Give an example
Chemical energy changes to electrical energy.
What do you understand by the term energy? Is energy a scalar or vector? How is the energy possessed by a body measured?
A force can cause an object to change its ______.
A ______ should act on an object.
A body of mass 0.5 kg travels on straight line path with velocity v = (3x2 + 4) m/s. The net work done by the force during its displacement from x = 0 tox = 2 m is ______.
