Question

The force of gravitation between a stone weighing Pand a man weighing Q is R. If the distance between their centres is S, which value for P, Q, R and S is correct? A) P: 80 kg, Q: 90 kg, R: 1.88 x 10 -8 N, S: 4 m B) P: 50 kg, Q:90 kg, R: 1.88 x 10-8 N, S: 4 m C) P: 50 kg, Q: 90 kg, R: 1.88 x 10-8 N,S: 2 m D) P: 50 kg, Q:90 kg, R: 3.88 × 10-N,S:4 m​

Answer 1

Answer:

Given : Mass of earth M=6×10

24

kg

Mass of object m=1 kg

Radius of earth R=6.4×10

6

m

Force of gravitation between them, F=

R

2

GMm

F=

(6.4×10

6

)

2

6.67×10

−11

×(6×10

24

)×1

=9.77 N