Question

A body weight 4kgwt on the surface of the earth what would be its weight on the surface of the planet whose mass is 1/8 mass of the earth and radius 1/2 of the earth?

Answer 1

Simple. Use the Formula g=GM/(R^2) and then substitute the given values. r= R/2 = 6400 km /2 = 3200km . Mass of earth /8 = 6.4 ×10^24 /8 kg.
Calculate g using this formula!
We know that the weight = mg
mass =4 Kg
weight = mass of body ×g
SOLVED.