Question

Q.10 Find the gravitational force of attraction between earth (M=6X1024 kg) and a body of mass 10 kg kept
on its surface. Given R=6400 km).​

Answer 1

Answer:

Given conditions

Mass of earth (m1)=6×1024kg

Mass of moon (m2)=7.4×1022kg

Distance between earth and the moon (d)=3.84×105km

Gravitational constant (G)=6.7×10−11Nm2/kg using Newton's law of gravitational F=Gd2m1m2

F is the force of gravitational between earth and moon

Substituting values in formula F=(3.84×108)26.7×10−11×6×1024×7.4×1022

⇒F=20.1741×1019N

⇒F=20.2×1019N

Thus the gravitational force of attraction between earth and sun is 2.02×1019N