Question

A physical text book has a mass of 2.2 kg.

a) what is the wieght on earth ?

b) What is the weight on Mars (g=3.7 m/s2)

c) If the text book wieghts 19.6 newtons on venus, what is the strenght of gravity on venus?

Answer 1

weight of a body on a planet = mass of the body * gravity of the planet

a) weight on earth = mass of the body * gravity of the earth = 2.2*9.8 = 21.56 newton

b) weight on earth = mass of the body * gravity of the mars = 2.2*3.7 = 8.14 newton

c) weight on Venus = mass of the body * gravity of Venus

19.6 = 2.2 * gravity of Venus

gravity of Venus = 19.6/2.2 = 8.909 m/sec²