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प्रश्न
________ is said to be done when a force is acting on it.
पर्याय
Ramp
Simple machines
Work
Energy
Pulley
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उत्तर
Work is said to be done when a force is acting on it.
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संबंधित प्रश्न
Why is a jack screw provided with a long arm?
Differentiate between energy and power.
A water pump raises 50 litres of water through a height of 25 m in 5 s. Calculate the power of the pump required.
(Take g = 10 N kg-1 and density of water = 1000 kg m-3)
A boy throws a rubber ball vertically upwards. What type of work, positive or negative, is done : by the force applied by the boy?
(a) by the force applied by the boy?
(b) by the gravitational force of earth?
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?
Choose one or more correct alternatives.
For work to be performed, energy must be ______.
- transferred from one place to another
- concentrated
- transformed from one type to another
- destroyed
Fill in the boxe to show the corresponding energy transformation.
State whether work is done or not, by writing yes or no, in the following case:
A man pushes a wall.
