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What is a centripetal force?...

What is a centripetal force?

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Work-done by centripetal force is zero.
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A metal bob of mass 0.6 kg is attached to the end of a string of length 1 m and the bob is whirled in a horizontal circle with a uniform speed of 12 m/s. What is the centripetal force acting on the bob ? If the speed of the bob is 5 m/s calculate the tension in the string.

The speed of the electron in the hydrogen atom is approximately 2.2 xx 10^(6) m//s . What is the centripetal force acting on the electron ifthe radius of the circular orbit is 0.53 xx 10^(-10) m ?Mass of the electron is 9.1 xx 10^(-31) kg

Consider the circular motion f the earth around the sun. Which of the following statements is more appropriate? a. Gravitational attraction of the sun on the earth is equal to the centripetal force. b. Grvitational attraction of the sun on the earth is the centripetal force.

What is the centripetal acceleration of a space vehicle moving round the earth, assuming its orbit to be circular ? What is the apparent weight of an astronaut ?

Is centrifugal force the force of reaction of centripetal force ?

What is centripetal acceleration ? Why is it called so ?

If a particle of mass m is moving in a horizontal circle of radius r with a centripetal force (-1//r^(2)) , the total energy is

With reference to the direction of action, how does a centripetal force differ from a centrifugal during uniform circular motion ?

An electron of mass m, moves around the nucleus in a circular orbit of radius .r. under the action of centripetal force .F.. The equivalent electric current is

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ICSE-CIRCULAR MOTION -MODULE 1 (SHORT ANSWER QUESTIONS)
  1. What is centripetal acceleration ? Why is it called so ?

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  2. The dimensions of centripetal acceleration is

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  3. What is a centripetal force?

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  4. A passenger in a car moving round a curved road is thrown towards the ...

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  5. Why does an aeroplane tilt while making.a curved flight ?

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  6. Assertion When a car takes a circular turn on a horizontal road, then ...

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  7. Find the acceleration of a particle placed on the surface of the earth...

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  8. Why does mud fly off a rapidly turning wheel ?

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  9. "A mass is attached to one end of a spring and by holding the other en...

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  10. At what point does a pilot in an aeroplane appear to be heaviest while...

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  11. An electric kettle has two coils. When one of these is switched on, th...

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  12. Explain the reason of separation of cream from milk.

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  13. A motor cyclist rides around the well with a round vertical wall and d...

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  14. What is meant 'banking of the road' ?

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  15. On what values does the angle of banking depend ?

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  16. What is meant by banking of rails ? What is its purpose ?

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  17. Consider an infinite distribution of point masses (each of mass m) pla...

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  18. What is the conical, pendulum ? Why is it called so ?

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  19. How are metals used as semiconductors refined ? What is the principle ...

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  20. Where does a body weigh more – at the surface of the earth or in a min...

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