Question Pool Gravitation

Gravitation - SAMAGRA Question Pool & Answers | Class 9 English Medium

Kerala Syllabus SAMAGRA SCERT SAMAGRA Question Pool for Class 9 English Medium Physics Gravitation

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Qn 1.

Imagine a spring balance is dropped from the top of a building along with a mass of 1 Kg.

  1. What will be reading of the spring balance while falling down? Why ?

  2. If the mass takes 5s to reach ground, find out height of the building.

  3. What is the velocity of the mass just before it touches the ground ?



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Qn 2.

The resultant gravitation force at the centre of the Earth is zero. Give reason.



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Qn 3.

Will the value of g be the same everywhere on the Earth ? Why ?



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Qn 4.

An iron block of mass 1 Kg falls freely from the top of a building in 2 s.

  1. calculate height of the building. (g = 10  m/s2)

  2. If the experiment was repeated at the same altitude as the moon, how long would it take for the iron block to reach the lunar surface? ( g on moon = 1.62 m/s2)



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Qn 5.

If the distance between two objects attracting each other is increased by 4 times, what will be the force of attraction between them ?



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Qn 6.

Calculate the weight of an object of mass 40 Kg.