Question

-What is the potential energy at point A?

-What is the kinetic energy at point A?

-What is the kinetic energy at point B?

-What is the potential energy at point D?

-What is the kinetic energy at point D?

Answer 1

• 156
• 0
• 52
• 0
• 156

Step-by-step explanation:

Assuming there is no friction or other force involved, recall that energy is conserved in a system as long as no external force acts on the system.

Using the data from point C, we can find out that the total energy of the system is 156 because
`E = K+Pe`.

Since at point A the object doesn't move, it has Kinetic energy of 0, because
`K=(1)/(2) mv^2`, therefore
`0=(1)/(2) m0^2`. However at point A it has maximum Potential energy, because
`Pe=mgh`.

At point B, we can find the Kinetic energy by using
`E = K+Pe`. Substitute values:

`156=104+K\\52=K`

At point D, the object has maximum kinetic energy and no potential energy, therefore it's the opposite of point A.