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Motion in Straight Line
Question
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If the diameter of the earth becomes three times its present value but its mass remains unchanged, then how would the weight of the body on the surface of the earth be affected?

Answer

If the diameter of the earth becomes three times its present value weight of the body on the surface of the earth decreases to one-ninth. 

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Some More Questions From Motion in Straight Line Chapter

What is rest?

What is motion?

Is absolute rest or absolute motion possible?

What is the most essential thing to study the motion of a body?

Can a body be always at rest in some frame?

Can a body be in motion in the frame associated with the body itself?

When an object in motion can be considered as particle or point object?

Can you think of physical phenomena involving the moon in which moon cannot be treated as particle?

A train is crossing the bridge. Can it be taken as a particle?

Can a train be taken a particle? Give an example in support of your answer.