Posted by **lost** on Tuesday, May 1, 2012 at 8:24pm.

The cable of a 1800-kg elevator has broken, and the elevator is moving downward at a steady speed of 1.6 m/s. A safety braking system that works on friction prevents the downward speed from increasing.

a. at what rate does mechanical energy turn into thermal energy. I found this:

28.2528 kW

b.While the elevator is moving downward at 1.6 m/s, the braking system fails and the elevator is in free-fall for a distance of 5.3 m before hitting the top of a large safety spring with force constant of 1.50 104 N/m. After the elevator hits the top of the spring, find the distance d that the spring is compressed before the elevator is brought to rest.

- physics -
**bobpursley**, Tuesday, May 1, 2012 at 9:03pm
see other post.

## Answer this Question

## Related Questions

- physics - The cable of a 1800-kg elevator has broken, and the elevator is ...
- physics - The cable of a 1800-kg elevator has broken, and the elevator is moving...
- physics - An elevator is being lifted up an elevator shaft at a constant speed ...
- physics - A 800·kg elevator is attached to a cable whose tension is 7800·N. ...
- Physics - In a "worst-case" design scenario, a 2000-{\rm kg} elevator with ...
- Physics - An elevator is initially moving upward at a speed of 11.04 m/s. The ...
- Physics - An elevator and its load have a combined mass of 1600 kg. Find the ...
- Physics - An elevator has a combined mass of 1700kg. Find the tension of the ...
- physics - an elevator and its load have a total mass of 1000 kg. find the ...
- physics - an elevator and its load have a total mass of 1000kg. find the tension...

More Related Questions