Question

Which of the following is the force of gravitation between the earth the sun, given that the mass of the earth, $6\times {10}^{24}kg$ and mass of the sun, $2\times {10}^{30}kg$. The average distance between the two is $1.5\times {10}^{11}m$.

• A.
  $3.57\times {10}^{22}N$
• B. $5.35\times {10}^{32}N$
• C. $5.35\times {10}^{32}N$
• D. $5.36\times {10}^{33}N$

Answer 1

The correct option is A

$3.57\times {10}^{22}N$
Given
$m_E=6\times {10}^{24}kg$
$m_S=2\times {10}^{30}kg$
and
$r=1.5\times {10}^{11}kg$
So, $F=\frac{G\times 6\times {10}^{24}\times 2\times {10}^{30}}{1.5\times {10}^{11}\times 1.5\times {10}^{11}}=3.57\times {10}^{22}N$

Where G is the gravitational constant.