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प्रश्न
Work is said to be done by a forte only when ................
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उत्तर
Work is said to be done by a forte only when the body moves.
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संबंधित प्रश्न
A body of mass 5 kg falls from a height of 10 m to 4 m. Calculate:
The loss in potential energy of the body,
What is the work done against gravity when a body is moved horizontally along a frictionless surface?
When do we say that work is done? Write the formula for the work done by a body in moving up against gravity. Give the meaning of each symbol which occurs in it.
A boy pulls a box up to 10 m with a force of 5 kgf. Calculate the work done by him.
List any six forms of energy and write a short note on each of them.
Fill in the boxe to show the corresponding energy transformation.
State the energy changes which take place when Water stored in the dam is used to turn turbine in dynamo.
Give an example
Chemical energy changes to electrical energy.
Define Translational motion.
Look at the activity below. Reason out whether or not work is done in the light of your understanding of the term ‘work’.
A green plant is carrying out photosynthesis.
