Browse by Stream
QnA
Home
QnA
Go To Your Study Dashboard

Get Answers to all your Questions

header-bg qa
  • Home
  • Medical
  • A 10 kg satellite completes one revolution around the earth at a height of 100 km in 108 minutes. The work done by the gravitational force of earth will beOption

A 10 kg satellite completes one revolution around the earth at a height of 100 km in 108 minutes. The work done by the gravitational force of earth will be

Option: 1

108 x 100 x 10 J 
 


Option: 2

\frac{108 \times 10}{100}J


Option: 3

\frac{100\times 10}{108}J


Option: 4

Zero


Answers (1)

best_answer

 

 

 

 

  1. Zero work

  • Under three condition Work can be zero

             a. If the force is perpendicular to the displacement

                      Means \Theta = \frac{\pi }{2}

                 E.g-When a body moves in a circle the work done by the centripetal force is always zero.

             b. If there is no displacement (means s = 0)

                 E.g- When a person tries to displace a wall by applying a force and can't able to move the wall

                        So the work done by the person on the wall is zero.

             c. If there is no force acting on the body (means F=0)

                 E.g-Motion of an isolated body in free space.

 

So,

Work done by centripetal force in circular motion is always equal to zero .

Posted by

Ritika Kankaria

View full answer

NEET 2024 Most scoring concepts

    Just Study 32% of the NEET syllabus and Score up to 100% marks

Similar Questions

Trending Articles/News

anam-khan

NEET UG 2025 'safe': All state governments on alert, NTA cautions against paper leak, misleading rumours
anam-khan

NEET-UG mock drills underway across centres ahead of May 4 entrance
anam-khan

NEET probe: NMC cancels admission of 14 students, orders suspension of 26 more

Latest Question