Chapter 7 Circular Motion _ Test 4

1. The mathematical relation for centripetal acceleration is __________

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2. The reaction force to the centripetal force which appears at the center of ;circle is called _______

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3. Centrifugal force is equal in magnitude to the centripetal force but ________ in direction

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4. Centrifugal force ______as long as centripetal force acts on the object.

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5. While taking a turn on a car the necessary centripetal force is provided due ;to the force of ______ between tyres and road.

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6. _____________ help to separate the heavy and light particles form the mixture.

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7. The relation for universal law of gravitation is F = _____________

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8. The relation for mass of earth is M = _____________

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9. The numerical value of mass of earth is ______________ kg.

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10. The value of g at a given place depends upon the distance from the _________ of earth

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11. The orbital speed of satellite is ___________

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12. Artificial satellites keep on revolving around the earth in different orbits with uniform speed due to __________force.

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13. The velocity of Geostationary satellites relative to earth is _________

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14. If a Rocket is fired vertically with the speed of _____ it will start revolving around the earth

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15. Geostationary satellites remain stationary at a height of about ______ km.

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