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Motion In Straight Line

Question
CBSEENPH11017504
Wired Faculty App

If the radius of the earth were to shrink by one percent, its mass remaining the same, what would happen to the value of g?

Solution
The acceleration due to gravity at the surface of the earth is,
                         straight g equals GM over straight R squared 
The radius of the earth decreases by 1%, 
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Now the acceleration due to gravity will be, 
                
Percentage increase in acceleration due to gravity, fraction numerator straight g apostrophe minus straight g over denominator straight g end fraction 100 equals 2 % 

Some More Questions From Motion in Straight Line Chapter

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.

 A particle is moving along curved line in space. Is the motion one dimensional?

State which of the following are examples of one, two or three dimensional motion: 

(a) A kite flying in the sky.

(b) The earth revolving around the sun. 

(c) A train moving along the equator of the earth in clockwise direction. 

(d) Accelerated motion of a particle in a straight line.

Define distance.

Define displacement.

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