Chapter 1
Q. 1.20
Two particles have a mass of 8 kg and 12 kg, respectively. If they are 800 mm apart, determine the force of gravity acting between them. Compare this result with the weight of each particle.
Step-by-Step
Verified Solution
F=G \frac{m_1 m_2}{r^2}
\text { Where } G=66.73\left(10^{-12}\right) m ^3 /\left( kg \cdot s ^2\right)
F=66.73\left(10^{-12}\right)\left[\frac{8(12)}{(0.8)^2}\right]=10.0\left(10^{-9}\right) N =10.0 nN
W_1=8(9.81)=78.5 N
W_2=12(9.81)=118 N