Question

Question 33:
State two applications of universal law of gravitation.

Lakhmir Singh Physics Class 9

Answer 1

Answer:

1) we use this to calculate the force or pull of gravity of the planets of the earth and earth included 2) this low also come in handly when when calculating the trajectory of astronomical bodies .

Answer 2

Dear Student,

◆ Universal law of gravitation -

• Gravitational force of attraction between two bodies is given by Newton's law as-

F = Gm1m2/r²

# Applications of universal law of gravitation -

1. It can be used to determine expected orbit of artificial satellite.
2. It can be used to calculate mass of stars, planets, etc.
3. It helps in discovering new stars from universe.
4. It explains the spherical shape of earth.

Thanks dear...