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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
A man spends 7.4 KJ energy in displacing a body by 74 m in the direction in which he applies force in 2.5 s. Calculate the force applied.
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?
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.
Name the force needed for circular motion. What is the direction of the force?
Give the units of couple.
Justify the statement. “Power can be expressed as the product of force and velocity.”
State the C.G.S. unit of work. How it is related to its S.I. unit?
A force of 1 kgf displaces a body by a distance of 10 cm
(i) in direction of force,
(ii) normal to the force
(iii) at an angle of 60° to the direction of the force.
Calculate the amount of work done in each case. (Take: g = 9.8 ms−2 )
A man raises a box of mass 50 kg to a height of 2 m in 20 s, while another man raises the same box to the same height in 50 s. Compare:
- the work done, and
- the power developed by them. Take g = 10 N kg-1
