An explorer whose mass is the same everywhere reads a weight of on a spring balance…
PHYSICS · Subjective · A Level · Physics · Fields and their consequences · Fields and their consequences
Problem
An explorer whose mass is the same everywhere reads a weight of 750N on a spring balance when standing on the Earth. On planet Y the same balance shows 300N. The radius of planet Y is 3.5×106m, while the radius of the Earth is 6.4×106m.
(a) Determine the explorer’s mass.
(b) Calculate the value of the acceleration due to gravity at the surface of planet Y.
(c) Hence find the mass of planet Y.
(d) Compare the mass of planet Y with that of the Earth, given that the Earth’s mass is 6.0×1024kg.