Examples
You lifted a set of books of mass 3kg, for 2m. What is the GPE gained by the books? Take g=9.8m/s.
GPE= 58.8 J
What is the unit for GPE?
What is Joules?
What does GPE stand for? (Double Jeopardy)
Gravitational Potential Energy
What is the GPE of a 500kg alien that is flying 3 meters above the ground on Venus? (gravity on Venus = 8.87 m/s2
13,305 Joules
What is the equation to find GPE?
GPE = Mass x gravity x height
What variable comes first in the GPE formula? (Double Jeopardy)
Mass
An astronaut has a total mass of 110 kg. On the moon, he climbs into his spacecraft, 5 m up a ladder. His GPE increases by 880 J. What is the strength of gravity on the moon? ( Double Jeopardy)
1.6 m/s2
What does the H stand for in the formula for GPE?
Height
What is an example of GPE?
Answers vary
A boy has a mass of 55kg. He climbs 12 m up a tree. What is his gain in GPE? Earths gravity = 9.8 m/s2
6468 Joules
What does the G stand for in the formula for GPA? (GPA = m x g x h)
Gravity
If N = newtons and Kg = kilograms, what would N/kg mean?
Newtons per kilogram.
A crane lifts a 75kg mass and a height of 8m. Calculate the GPE gained by the mass (g=9.8 N/kg)
5,880 J
Gravity (Gravitational Field Strength) always equals...
9.8 m/s2
N/kg is the same as?