if the distance between two objects is decreased to $\frac{1}{10}$ of the original distance, how will it…

if the distance between two objects is decreased to $\frac{1}{10}$ of the original distance, how will it change the force of attraction between them?\na. the new force will be 100 times more than the original.\nb. the new force will be 20 times more than the original.\nc. the new force will be $\frac{1}{20}$ of the original.\nd. the new force will be $\frac{1}{100}$ of the original.\ne. the new force will be $\frac{1}{10}$ of the original.
Answer
Explanation:
Step1: Recall gravitational - force formula
The gravitational force between two objects is given by $F = G\frac{m_1m_2}{r^2}$, where $G$ is the gravitational constant, $m_1$ and $m_2$ are the masses of the two objects, and $r$ is the distance between them.
Step2: Let the original distance be $r_1$ and new distance be $r_2$
Given that $r_2=\frac{1}{10}r_1$. Let the original force be $F_1 = G\frac{m_1m_2}{r_1^2}$ and the new force be $F_2 = G\frac{m_1m_2}{r_2^2}$.
Step3: Substitute $r_2$ into the formula for $F_2$
Substitute $r_2=\frac{1}{10}r_1$ into $F_2$: $F_2 = G\frac{m_1m_2}{(\frac{1}{10}r_1)^2}=G\frac{m_1m_2}{\frac{1}{100}r_1^2}=100\times G\frac{m_1m_2}{r_1^2}$. Since $F_1 = G\frac{m_1m_2}{r_1^2}$, we have $F_2 = 100F_1$.
Answer:
A. The new force will be 100 times more than the original.