+91-8076753736[email protected]
logo
logo
-->

Motion In Straight Line

Question
CBSEENPH11020715
Wired Faculty App

The dependence of acceleration due to gravity g on the distance r from the centre of the earth assumed to be a sphere of radius R of uniform density is as shown in figure below



The correct figure is

  • (4) 

  • (1)

  • (2)

  • (3)

Solution

A.

(4) 

because space straight g space proportional to space straight r space space left parenthesis if space straight r space less than straight R right parenthesis and space straight g space proportional to space 1 over straight r squared space left parenthesis if space straight r greater than space straight R right parenthesis
So, the correct figure will be

Some More Questions From Motion in Straight Line Chapter

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.

Can magnitude of displacement be greater than distance travelled by particle?

Mock Test Series

Mock Test Series

NCERT Sample Papers

Entrance Exams Preparation