Barron's 2nd Edition DT Q36

Barron's Book

36) This question asks us to find the change in potential energy from point B to point C. In this problem, the only potential energy present in gravitational potential energy.

This is the equation for gravitational potential energy.

U is potential energy, g( ≈ 10 m/s^2) is acceleration due to gravity, and h is height

Now we can write out our equation for the change in potential energy.

U is potential energy, g( ≈ 10 m/s^2) is acceleration due to gravity, and h is height

We can look at the diagram to find the height at point B and at point C.

Finally, we can just plug in all our values to find our change in potential energy.

Answer: D