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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 __________.
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
When do we say that work is done?
A pair of bullocks exerts a force of 140 N on a plough. The field being ploughed is 15 m long. How much work is done in ploughing the length of the field?
Look at the activity below. Reason out whether or not work is done in the light of your understanding of the term ‘work’.
A sailboat is moving due to wind energy.
An object thrown at a certain angle to the ground moves in a curved path and falls back to the ground. The initial and the final points of the path of the object lie on the same horizontal line. What is the work done by the force of gravity on the object?
When does a force perform work?
Define 1 joule of energy.
A force of 30 N acts on a body and moves it through a distance of 5 m in the direction of force. Calculate the work done by the force.
Name the forms of energy which a wound-up watch spring possesses.
A car is being driven by a force of 2.5 ✕ 1010 N. Travelling at a constant speed of 5 m/s, it takes 2 minutes to reach a certain place. Calculate the work done.
The work done on an object does not depend on the :
Determine the amount of work done when an object is displaced at an angle of 30° with respect to the direction of the applied 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
No work is done by a man moving on a horizontal road while carrying a box on his head. Explain.
A boy pulls a box up to 10 m with a force of 5 kgf. Calculate the work done by him.
In the following case write yes, if the work is being done and no if no work is being done.
A coolie standing with a heavy load on his head
Explain, why submarines are able to dive underwater as well as a sail on the surface of the water?
