Question

On the surface of Mars, the acceleration of gravity is 0.39 times that on the earth. What would 7 kg weigh in Newton's on Mars?

Answer 1

26.75 newtons

Explanation:

Given:

Mass (m) = 7kg

Force of gravity on Earth = 9.8 m/s^2

Therefore, the force of gravity on Mars would be:

`\begin{gathered} g_m=0.39\cdot g_e=0.39\cdot9.8 \\ g_m=3.822\text{ m/s}^2 \end{gathered}`

Weight equals mass times the force of gravity, so:

`\begin{gathered} W=m\cdot g \\ \text{ We replacing} \\ W=7\cdot3.882 \\ W=26.75\text{ N} \end{gathered}`

The weight on Mars is 26.75 newtons.