SAT Subject Physics Practice Question 405: Answer and Explanation

Next steps

Question: 405

11. A child is swinging on a swing set. As the child reaches the lowest point in her swing

A. the tension in the rope is equal to her weight.
B. the tension in the rope supplies a centrifugal force.
C. her kinetic energy is at maximum.
D. her tangential acceleration equals gravity.
E. her angular velocity is minimum.

Correct Answer: C


The correct answer is (C). All the gravitational potential energy at the top of the child's swing pathway is converted into kinetic energy at the bottom of her swing pathway.

Previous       Next