Question

if g is the acceleration due to gravity at the surface of the earth. The force acting on the particle of mass m placed at the surface is
a) mg
b)GmM/R
c)Data insufficient
d) both(a) and (b)​

Answer 1

Answer:

a) mg

Explanation:

because the force acting on a particle is

f = ma

In this case , a is the acceleration

so according to the question; g is the acceleration due to gravity

therefore, force acting = mg

second option f = GMm/r^2 is incorrect because in this formula r is the distance between the centres of two bodies in which the gravitational force is acting.

and it is the force of gravity which is acted on a body on the surface of the earth