Gravitational Potential Energy Flashcards
1
Q
As an object goes into a higher position it ………. gains/loses GPE.
A
gains
2
Q
What is the GPE of an object?
A
The GPE of an object is the energy it has.
3
Q
What is GPE measured in?
A
Joules (J)
4
Q
What is the equation for GPE?
A
ΔEp (J) = Mass (kg) x Gravitational field strength (N/kg) x Δh (m)
5
Q
What is the gravitational field strength on Earth?
A
10N/kg
6
Q
What is the equation for weight?
A
Weight (N) = Mass (kg) x Gravitational field strength (N/kg)
7
Q
A 30kg mass is lifted 5m in the air. How much GPE does a gain?
A
GPE = 30kg x 10N/kg x 5m = 1500J
