What is the simulated gravitational field strength half-way between the axis of the Earth and the outside edge where the field strength is g?
A)zero
B)g
C)one-half g
D)three-quarters g

Question

Quizplus · Accepted Answer

According to the shell theorem, the gravitational field inside a hollow sphere is zero. Therefore, at the center of the Earth, the gravitational field strength due to the shell is zero. As we move towards the surface, the field strength gradually increases until it reaches the value of g at the surface. Therefore, halfway between the axis of the Earth and the outside edge, the gravitational field strength would be halfway between zero and g, which is one-half g. Hence, the correct answer is option C.

What Is the Simulated Gravitational Field Strength Half-Way Between the Axis