Question

State universal law of gravitation. Explain its significance. Mass of an object is 20 kg. Find its weight
on earth and on moon.​

Answer 1

Answer:

the force between two bodies of mass M,m whose distance are 'd' apart is directly proportional to product of their mass and is inversely proportional to square of their distance between them

i) it tells us about the formation of the tides on earth

ii) about motion of the moon around earth

iii) about motion of planets around sun

iv) force which holds us on the earth

W =mg

on earth

20 * 9.8. as, g= 9.8

196

as W of object on moon = 1/6 W of object on earth

1*196/6

32.666 N