Monday
April 21, 2014

Homework Help: physics

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.

Answer this Question

First Name:
School Subject:
Answer:

Related Questions

Physics - Safety engineers estimate that an elevator can hold 20 persons of 65 ...
physics - The cable of a 1800-kg elevator has broken, and the elevator is ...
Physics - A cable lifts a 1370 kg elevator at a constant velocity for a distance...
physics - The cable of a 1800-kg elevator has broken, and the elevator is moving...
physics - A fully loaded, slow-moving freight elevator has a cab with a total ...
Physics - A 1200 kg elevator is attatched to a cable whose tension is 11700 n. ...
College Physics - A 6107 kg elevator is moving 4.6 m/s up. The tension in the ...
science - A cable lifts a 1050-kg elevator at a constant velocity for a distance...
physics - An elevator is being lifted up an elevator shaft at a constant speed ...
Physics - An elevator manufacturing company is stress-testing a new elevator in ...

Search
Members