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प्रश्न
Fill in the blank with suitable word :
1 joule is the work done when a force of 1 __________ moves an object through a distance of one __________ in the direction of __________.
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उत्तर
1 joule is the work done when a force of 1 Newton moves an object through a distance of one meter in the direction of force.
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संबंधित प्रश्न
In which of the following cases is work being done:
- A boy pushing a heavy rock
- A boy climbing up the stairs
- A coolie standing with a box on his head
- A girl moving on the road.
A boy of weight 40 kgf climbs up the 15 steps, each 15 cm high in 10 s and a girl of weight 20 kgf does the same in 5 s. Compare:
- the work done, and
- the power developed by them. Take g = 10 N kg-1.
What should be the angle between the direction of force and the direction of motion of a body so that the work done is zero?
Define 'joule'.
On what factors does the work done by a force depend?
A boy pulls a box up to 10 m with a force of 5 kgf. Calculate the work done by him.
________ is said to be done when a force is acting on it.
Look at the activity below. Reason out whether or not work is done in the light of your understanding of the term ‘work’.
Suma is swimming in a pond.
