Question
A conservative system consists of a frictionless crane lifting a load of bricks at a constructionsite. The amount of work done by the crane against gravity when the bricks are at a certain heightabove the ground is
(1 point)
greater than the potential energy stored in the bricks at that height
less than the potential energy stored in the bricks at that height
equal to the kinetic energy of the bricks at that height
equal to the potential energy stored in the bricks at that height
(1 point)
greater than the potential energy stored in the bricks at that height
less than the potential energy stored in the bricks at that height
equal to the kinetic energy of the bricks at that height
equal to the potential energy stored in the bricks at that height
Answers
GPT-4o mini
In a conservative system where a crane is lifting a load of bricks against gravity, the amount of work done by the crane against gravity is equal to the potential energy stored in the bricks at that height.
When the crane lifts the bricks, it is doing work against the gravitational force, and this work is stored as gravitational potential energy in the bricks. Therefore, the correct answer is:
**equal to the potential energy stored in the bricks at that height.**
When the crane lifts the bricks, it is doing work against the gravitational force, and this work is stored as gravitational potential energy in the bricks. Therefore, the correct answer is:
**equal to the potential energy stored in the bricks at that height.**