Question

Willy places a new sign on a billboard 20 m high. The sign has a mass of 8
kg.

Answer 1

Since the new sign is placed on a billboard 20 m high and it has a mass of 8 kg, its potential energy is equal to 1568 Joules.

In Mathematics and Physics, the gravitational potential energy (GPE) of any physical object can be calculated by using this formula:

GPE = mgh

Where:

• GPE represents gravitational potential energy.
• m represents the mass.
• h represents the height.
• g represents acceleration due to gravity.

Note: The acceleration due to gravity on Earth is equal to 9.8
`m/s^2`.

By substituting the given parameters into the formula, we have;

Gravitational potential energy (GPE) = 8 × 9.8 × 20

Gravitational potential energy (GPE) = 270,950.4 Joules.

Gravitational potential energy (GPE) = 1568 Joules.

Complete Question:

Willy places a new sign on a billboard 20 m high. The sign has a mass of 8 kg. What is the potential energy of this sign?