Gravitational Potential Energy

Front

What is Gravitational Potential Energy (GPE)?

Back

Gravitational Potential Energy (GPE) is the energy an object possesses due to its position in a gravitational field, typically relative to the ground.

Front

What is the formula for calculating Gravitational Potential Energy?

Back

The formula for GPE is: GPE = m * g * h, where m is mass (in kg), g is the acceleration due to gravity (approximately 9.8 m/s²), and h is height (in meters).

Front

What factors affect Gravitational Potential Energy?

Back

Gravitational Potential Energy is affected by the mass of the object, the height above the ground, and the strength of the gravitational field.

Front

Which has more Gravitational Potential Energy: a 2 kg book on a shelf 2 meters high or a 1 kg book on a shelf 4 meters high?

Back

The 2 kg book has more GPE: GPE = 2 kg * 9.8 m/s² * 2 m = 39.2 Joules; GPE = 1 kg * 9.8 m/s² * 4 m = 39.2 Joules.

Front

At what height does a 1 kg object have 9.8 Joules of GPE?

Back

Using the formula GPE = m * g * h, rearranging gives h = GPE / (m * g). For 9.8 Joules: h = 9.8 J / (1 kg * 9.8 m/s²) = 1 meter.

Front

What is the GPE of a 5 kg object at a height of 3 meters?

Back

GPE = m * g * h = 5 kg * 9.8 m/s² * 3 m = 147 Joules.

Front

How does GPE change as an object falls?

Back

As an object falls, its GPE decreases while its kinetic energy increases, conserving the total mechanical energy (ignoring air resistance).

Front

What is the GPE of an object on the ground?

Back

The GPE of an object on the ground is zero, as its height (h) is zero.

Front

What type of energy does a rock at the edge of a cliff possess?

Back

A rock at the edge of a cliff possesses Gravitational Potential Energy due to its height above the ground.

Front

How does the GPE of an airplane flying at 30,000 feet compare to a ball on the ground?

Back

The airplane has significantly more GPE than the ball on the ground due to its greater height.