Question

Two 65.0 kg ice skaters are standing 2.00 m away from each other in the ice. What is the gravitational attraction between the two skaters? Use G-6.67 x 10-11 Nm2/kg2 A)7x10-8 N B)ON C)14 x 10-8N D) 10.8 x 10-10 N

Answer 1

Answer:

A) 7×10⁻⁸ N

Explanation:

r = Distance between the two skaters = 2 m

m₁ = m₂ = Mass of the two skaters = 65 kg

G = Gravitational constant = 6.67 × 10⁻¹¹ m³/kgs²

From Newton's Law of Universal gravity

$F=G\frac{m_1m_2}{r^2}\\\Rightarrow F=6.67\times 10^{-11} \frac{65\times 65}{2^2}\\\Rightarrow F=7.045\times 10^{-8}\ N$

∴ Force of gravity between the two skaters is 7×10⁻⁸ N