An object weighs 300 N.If the gravitational constant G were half of what it is currently,what would the weight of the object be?
A)300 N
B)150 N
C)75 N
D)600 N
E)450 N

Question

An object weighs 300 N.If the gravitational constant G were half of what it is currently,what would the weight of the object be?
A)300 N
B)150 N
C)75 N
D)600 N
E)​450 N

Quizplus · Accepted Answer

Weight is given by the formula W = mg, where g is the gravitational acceleration and m is the mass of the object. Gravitational force is given by F = G(m1m2)/r^2, where G is the gravitational constant, m1 and m2 are the masses of two objects, and r is the distance between them. If G were half of what it is currently, the gravitational force would also be half. Hence, the weight of the object would also be half, which is 150 N.

An Object Weighs 300 N