Lesson: Gravitational Potential EnergyPhysics
In this lesson, we will learn how to calculate the potential energy of an object due to its displacement from a given point in a uniform gravitational field.
Sample Question Videos
How much work is done against the gravitational force on a briefcase of mass 5.00 kg when it is carried from the ground floor to the roof of the Empire State Building, a vertical climb of 380 m?
A cat’s crinkle ball toy of mass 15 g is thrown straight up with an initial speed of 3.0 m/s. Assume, in this problem, that air drag is negligible.
What is the kinetic energy of the ball as it leaves the hand?
How much work is done by the gravitational force during the ball’s rise to its peak?
What is the change in the gravitational potential energy of the ball during the rise to its peak?
If the gravitational potential energy is taken to be zero at the point where the ball leaves the hand, what is the gravitational potential energy when it reaches the maximum height?
If the gravitational potential energy is taken to be zero at the maximum height the ball reaches, what would the gravitational potential energy be when it leaves the hand?
What is the maximum height the ball reaches?
Suppose a 350 g kookaburra (a large kingfisher bird) picks up a 75 g snake and raises it 2.5 m from the ground to a branch.
How much work did the bird do on the snake?
How much work did the bird do to raise its own center of mass to the branch?