Gravitation Question 313
Question: If masses of two point objects is doubled and distance between them is tripled, then gravitational force of attraction between them will nearly
Options:
A) Increase by 225%
B) decrease by 44%
C) Decrease by 56%
D)increase by 125%
Show Answer
Answer:
Correct Answer: C
Solution:
- % change $ [=\frac{\left[ \frac{G\left( 2m_{1} \right)\left( 2m_{2} \right)}{{{\left( 3r \right)}^{2}}}-\frac{Gm_{1}m_{2}}{r^{2}} \right]}{\frac{Gm_{1}m_{2}}{r^{2}}}\times 100] $ $ [\frac{\frac{4}{9}-1}{1}\times 100=-56%] $ -ve sign indicates that force of attraction decreases.
