Question

Why is 15 B?? I don’t really understand the graph

Test on Tuesday Thanks a lot

15. Whic h of the illustrations shows the correct relationship between the gravitational field strength vectors and the isolines of gravitational potential energy per unit mass? (A D) IV A bob of weight won a simple pendulum is pulled back to give it a small amplitude. The pendulum and its free-body diagram are shown below. Which force or force component causes the pendulum to return to equilibrium? 1.

Answer 1

Gravitational field energy per unit mass is known as the gravitational potential.And gravitational field vector lines for point/spherical mass is radially inwards .

The gravitational potential at a fixed distance from the mass remains same .

also,the gravitational field strength lines are always perpendicular to the gravitational potential lines that’s why the answer is B graph