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प्रश्न
What do you mean by a centrifugal force?
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उत्तर
Centrifugal force is a pseudo force that appears to act on a body moving in a circular path, directed away from the center of the circle, when observed from a rotating frame of reference.
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संबंधित प्रश्न
When a body is placed on a table top, it exerts a force equal to its weight downwards on the table top but does not move or fall
1) Name the force exerted by the table top
2) What is the direction of the force?
When a body moves in a circular path, how much work is done by the body? Give reason.
(Hint: The body is acted upon by the centripetal force.)
A body of mass m is moving with a uniform velocity u. A force is applied on the body due to which its velocity changes from u to v. How much work is being done by the force?
State the condition when a force produces
(i) linear motion.
(ii) rotational motion, in a body.
A body is provided at a point. A force of 20 N is applied at a distance of 40 cm from the pivot. Find the moment of force about the pivot.
In the following case write yes, if the work is being done and no if no work is being done.
A man moving on the rough ground.
State two conditions for work to be done.
Derive a relation between the S.I. and C.G.S. unit of force.
A man weighing 700 N runs up a flight of 15 steps, each 20 cm high, in 5 seconds. Calculate the power of the man.
A boy weighing 50 kgf climbs up from the first floor at a height of 3 m above the ground to the third floor at a height of 9 m above the ground. What will be the increase in his gravitational potential energy? (Take g = 10 N kg-1).
