# physics

posted by .

what happens to the gravitational energy of a firefighter when he slides down the firepoles?

• physics -

The gravitational energy decreases.
because P.E.= m*g*h

• physics -

The lost potential energy turns into kinetic energy and heating of the pole (and his hands) if he uses friction to slow down his slide.

## Similar Questions

1. ### physics

A firefighter of mass 120 kg slides down a vertical pole with an acceleration of 4 m/s per second. What is the friction force that acts on the firefighters?
2. ### Physics

A 5.0-kg box at the top of a 400cm ramp slides down 200 cm. How much gravitational potential energy was lost as the box slides from the top of the ramp to the 200 cm mark of the ramp?
3. ### physics

A firefighter with a weight of 722 N slides down a vertical pole with an acceleration of 3.11 m/s2, directed downward. (a) What are the magnitude and direction of the vertical force (use up as the positive direction) exerted by the …
4. ### physics

What happens to the gravitational energy of a firefighter when he slides down the fire pole?
5. ### physics

What happens to the gravitational energy of a firefighter when he slides down the fire poles?
6. ### Physics

A 75kg firefighter slides down a 2.5m fire pole from rest. It takes the firefighter 1.8s to reach the ground. If the firefighter bends his knees when he reaches the ground such that his centre of mass mives 41cm while coming to a stop, …
7. ### Physics

A 75kg firefighter slides down a 2.5m fire pole from rest. It takes the firefighter 1.8s to reach the ground. If the firefighter bends his knees when he reaches the ground such that his centre of mass mives 41cm while coming to a stop, …
8. ### Physics

A 75kg firefighter slides down a 2.5m fire pole from rest. It takes the firefighter 1.8s to reach the ground. If the firefighter bends his knees when he reaches the ground such that his centre of mass mives 41cm while coming to a stop, …
9. ### Physics

A box slides down a frictionless, 10-meter, 30o incline. Calculate the gravitational potential energy at both the beginning and end of the motion. Calculate the work done by GRAVITY as the box slides down the incline. Compare this …
10. ### PHYSICS

A box slides down a frictionless, 10-meter, 30o incline. Calculate the gravitational potential energy at both the beginning and end of the motion. Calculate the work done by GRAVITY as the box slides down the incline. Compare this …

More Similar Questions