Gravitation Question 283

Question: The earth (mass [=6×1024kg)] ) revolves round the sun with angular velocity [2×107rad/s] in a circular orbit of radius [1.5×108km] . The force exerted by the sun on the earth in newtons, is [CBSE PMT 1995; AFMC 1999; Pb. PMT 2003]

Options:

A)[18×1025]

B) Zero

C) [27×1039]

D) [36×1021]

Show Answer

Answer:

Correct Answer: D

Solution:

[m=6×1024kg,]

[ω=2×107rad/s,]

[R=1.5×1011m]

The force exerted by the sun on the earth [F=mω2R]

By substituting the value we can get, [F=36×1021N]



NCERT Chapter Video Solution

Dual Pane