Question

calculate the gravitational force by which a stone of mass 1 kg placed on the surface of the Earth is attracted towards its Centre give mass of Earth is equal to( 6x10)24kg and radius of earth is 6400km​

Answer 1

Answer:

According to the universal, law of gravitation both moon and earth attract each other with a force that is directly proportional to the product of their masses and inversely proportional to the square of distance between them.

Answer 2

Answer:

9.8N

Given :

m_1 = 1 kg

m_2 = 6 x 10^24

d = 6400km = 6 x 10^6 m

To find :

f = ?

Solution :

F = G m_1 m_2/d²

F = 6.67 x 10^-11 x 1 x 6 x 10^24/(6.4 x 10^6)²

F = 40.02/4.096

F = 9.7705078125

F = 9.8 N

=> Answer is 9.8 N