Elastic Potential Energy: Calculation and Examples

The video tutorial explains elastic potential energy, focusing on how energy is stored in a spring when stretched. It covers the concept of work done by gravity, the energy transfer process, and the formula for calculating elastic potential energy. An example calculation is provided to illustrate the concept, followed by a summary and closing remarks.

What happens to a spring when a weight is attached to it?

• It compresses and stores kinetic energy.

• It remains unchanged and stores no energy.

• It bends and stores thermal energy.

• It stretches and stores elastic potential energy.

Which factor does NOT affect the amount of elastic potential energy stored in a spring?

• The color of the spring

• The extension of the spring

• The spring constant

• The amount of work done on the spring

How is the elastic potential energy in a spring calculated?

• By multiplying the spring constant by the extension

• By adding the spring constant and the extension

• By dividing the spring constant by the extension

• By using the formula 1/2 times the spring constant times the extension squared

If two identical springs are stretched by different amounts, which one stores more elastic potential energy?

• Both store the same amount of energy

• The one with the smaller extension

• The one with the greater extension

• Neither stores any energy

In the given example, what is the elastic potential energy stored in a spring with a spring constant of 50 N/m and an extension of 0.060 m?

• 0.090 joules

• 0.120 joules

• 0.060 joules

• 0.030 joules