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प्रश्न
What is the SI unit of work?
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उत्तर
Joule
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संबंधित प्रश्न
The S.I. unit of energy is .............
Write the expression for work done by a force.
State two factors on which the work done on a body depends.
Give reasons for the following A teacher moving around in the class is doing work but a child standing and reading a book is not doing any work.
A bullet of mass 0.5 kg slows down from a speed of 5 m s-1 to that of 3 m s-1. Calculate the change in kinetic energy of the ball.
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?
Draw a neat labeled diagram to show the direction of two forces acting on a body to produce rotation in it. Also mark the point about which rotation takes place.
Nm is the unit of .......
State the amount of work done by an object when it moves in a circular path for one complete rotation. Give a reason to justify your answer.
The weights of two bodies are 2.0 N and 2.0 kgf respectively what is the mass of each body?
