Homework Help: physics

Posted by Anonymous on Sunday, October 7, 2007 at 8:57pm.

The cavle on an elevator is what pulls the elevator up, and allows it to come down safely. The mass of the elevator is 1400 kg. If the elevator starts from rest and is pulled upwards with a constant tension of 18 kN, what will its speed be after moving 6m? (Assume no frictioanl force)

so i first drew a force diagram to find the total forces
F=m
Tension- Fgravity=ma
18000-9.8=1400a
a= 12.85 m/s

so now that I have found the acceleration of the elevator I need to help finding the its speed after 6m..I'm not sure how I would start doing that

physics - bobpursley, Sunday, October 7, 2007 at 9:56pm
forcenetup=ma
18kN-mg=ma

I dont know why you did not put in Mass in your Fgravity.

Answer this Question

Related Questions

Physics - A man in an elevator is 79kg. The elevator itself is 860kg. As the ...
Physics - A man measures the acceleration of an elevator using a spring balance...
Physics - A man measures the acceleration of an elevator using a spring balance...
physics - A 70kg man stands on a bathroom scale in an elevator. As the elevator ...
physics - Apparent Weight. A physics student weighing 600 N stands on a bathroom...
Physics - An elevator in a tall building is allowed to reach a maximum speed of ...
Physics - A 650 N student stands on a scale in an elevator. As the elevator ...
Physics - An elevator manufacturing company is stress-testing a new elevator in ...
Physics - An elevator's cable is cut causing the elevator to slide down thhe...
physics - The motor for an elevator can produce 2200 W of power. The elevator ...

For Further Reading

First Name:
School Subject:
Answer: