Question

Aryan and Kevin are two friends. The mass of Aryan is 40 kg and the mass of Kevin is 50 kg. If they are 50 cm away from each other, then find the gravitational force (in N) acting between them. (G is the universal gravitational constant)

• A. $2000GN$
• B. $6000GN$
• C. $8000GN$
• D. $10000GN$

Answer 1

The correct option is C $8000GN$

Given:
Mass of the Aryan, ${\text{m}}_A=40\text{kg}$
Mass of the Kevin, ${\text{m}}_K=50\text{kg}$
Distance between Aryan and Kevin, $\text{r}=0.50\text{m}$
Using universal law of gravitaion:
$F=\frac{\text{G}{\text{m}}_A{\text{m}}_K}{{\text{r}}^2}=\frac{\text{G}\text{(40)}\text{(50)}}{{\text{0.5}}^2}$
$\Rightarrow F=8000G$