Question

8.A satellite is 100 miles above the earth. It has a mass of 100 kg. If the mass ofthe satellite were doubled the force of gravity of the satellite on the earthwouldA) DoubleB) QuadrupleC) Stay the sameD) Be half as much

Answer 1

The distance of satellite is r=100 miles and the mass of satellite is m=100 kg.

The force of gravity which acts on the satellite is,

`F=(GMm)/(r^2)`

Here, F is the force of gravity, G isthe gravitational constant, M is the mass of earth, m is the mass of satellite and r is the distance of satellite.

As the force of gravity depends directly on the mass of satellite, therefore if the mass of the satellite were doubled then the force of gravity would also be doubled which means option (A) is correct.