Question

On a small planet, an astronaut uses a vertical

force of 175 newtons to lift an 87.5-kilogram
boulder at constant velocity to a height of
0.350 meter above the planet’s surface. What is
the magnitude of the gravitational field strength
on the surface of the planet?
(1) 0.500 N/kg (3) 9.81 N/kg
(2) 2.00 N/kg (4) 61.3 N/kg

Answer 1

constant velocity means the netto force = 0, therefore F(gravity) = F(astronaut).
175N divided by 87,5kg = 2.00kg/N

Answer 2

2.00 N/kg approximately.

Step-by-step explanation:

A gravitational flied is defined as the quotient between the gravitational force and the mass:

`g=(F)/(m)`

Replacing all given values, we have:

`g=(175N)/(97.6kg)\\ g=1.96(m)/(s^(2) )`

Therefore, the gravitational filed is approximately 2.00 N/kg.