What is Gravitational Potential Energy (GPE)?
Gravitational Potential Energy

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Physics
•
9th Grade
•
Hard
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1.
FLASHCARD QUESTION
Front
Back
Gravitational Potential Energy (GPE) is the energy an object possesses due to its position in a gravitational field, typically relative to the ground.
2.
FLASHCARD QUESTION
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).
3.
FLASHCARD QUESTION
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.
4.
FLASHCARD QUESTION
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.
5.
FLASHCARD QUESTION
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.
6.
FLASHCARD QUESTION
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.
7.
FLASHCARD QUESTION
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).
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