Question

A bag of ball bearing weighs 21.56N on earth and 3.52 N on another planet. what is the acceleration due to gravity on the other planet?

Answer 1

Find its mass in kg by its weight on Earth:

$$W_E=g_Em→m=W_E/g_E=2.2\text{ kg}.$$

The acceleration due to gravity on another planet is

$$g=W/m=1.6\text{ m/s}^2.$$