Q22 of 27 Page 66

The earth is acted upon by gravitation of Sun, even though it does not fall into the Sun. Why?

Earth is not stationary in its orbit. It is a constant state of revolution around the sun. The gravitation pull of sun acting on earth is sufficient to keep it in a circular motion around it centripetal acceleration.


More from this chapter

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20

The weight of any person on the moon is about 1/6 times that on the earth. He can lift a mass of 15 kg on the earth. What will be the maximum mass, which can be lifted by the same force applied by the person on the moon?

 21

Calculate the average density of the earth in terms of g, G and R.

 23

How does the weight of an object vary with respect to mass and radius of the earth. In a hypothetical case, if the diameter of the earth becomes half of its present value and its mass becomes four times of its present value, then how would the weight of any object on the surface of the earth be affected?

 24

How does the force of attraction between the two bodies depend upon their masses and distance between them? A student thought that two bricks tied together would fall faster than a single one under the action of gravity. Do you agree with his hypothesis or not? Comment.