Question
A person starts running at a speed of 30 cm/s. His weight is 1200 N. He reaches the top of the hill at 220 m. Considering the g as 10 m/s2, what is its gravitational potential energy?
- 2400J
- 24 J
- 2400 KJ
- 24KJ
Hint:
When the weight in terms of gravity is 1200N and the height is 20 m, the PGE will be 24KJ.
The correct answer is: 24KJ
- The gravitational potential energy GPE= mgh.
- mg = 1200 N
h = 20
GPE= 1200N 
20m
= 24000J
= 24KJ
Related Questions to study
A roller coaster is at the top of a 72 m hill and weighs 966 N. What is its gravitational potential energy?
The energy that an object has or acquires when its position changes due to being in a gravitational field are known as gravitational potential energy. Gravitational potential energy can be defined as energy that has a connection to gravitational force or gravity.
Gravitational potential is the effort required to move a unit test mass from infinity into the source mass's gravitational field. Both are held above the table, with one at the table. We can now state that the pencil that is higher than the table will have more gravitational potential energy.
¶The formula for Gravitational Potential Energy
⇒ GPE = m⋅g⋅h
where
m represents the mass in kilograms.
Gravitational acceleration, or g (9.8 on Earth)
The measurement of h above the ground is in meters.
A roller coaster is at the top of a 72 m hill and weighs 966 N. What is its gravitational potential energy?
The energy that an object has or acquires when its position changes due to being in a gravitational field are known as gravitational potential energy. Gravitational potential energy can be defined as energy that has a connection to gravitational force or gravity.
Gravitational potential is the effort required to move a unit test mass from infinity into the source mass's gravitational field. Both are held above the table, with one at the table. We can now state that the pencil that is higher than the table will have more gravitational potential energy.
¶The formula for Gravitational Potential Energy
⇒ GPE = m⋅g⋅h
where
m represents the mass in kilograms.
Gravitational acceleration, or g (9.8 on Earth)
The measurement of h above the ground is in meters.
