Which equation is used to calculate the weight of an object on a planet? w = mg w = mg w = startfraction mass over grams endfraction w = startfraction m over c endfraction

W = mg

Explanation:

Sorry if i get you right, we calculate weight by simply multiplying mass by the gravity on the surface of the planet.

Weight = Mass x Surface Gravity

W = m × g

So, if you know your weight on Earth

and the surface gravity on Earth, you

can calculate your mass. You can then

calculate your weight on any other

planet by using the surface gravity of

that planet in the same equation.

If you know the mass on like g = 9.81 m/s² for planet earth.

Goodluck

one person pulls 90n one way and the other has 100n pulling the other way.

so the net force = 90 - 100 = -10n,

or the ans can be 10n if the picture shows -90n and 100n instead.