Elevator problem; but i don't have the mass

[jtwitty]

Homework Statement

An elevator is lifted by a capble with a tension fo 50,000N. The weight of the elevator is 49,000N. How fast will the elevator be moving after 5 seconds if it starts from rest.

Homework Equations

IDK!

The Attempt at a Solution

I found the net force to be 1000N (50,000 - 49,000N)

But i can't plug it in anywhere because i don't know the mass of the elevator?

 

[jtwitty]

THE ELEVATOR MASS IS 4,900kg BECAUSE the weight is 49,000 so 49000 / 10 (gravity) = kg

i love figuring myself outnahhahahhahahahha

thanks for letting me put the problem out there

edit: is that right? :/

 

[suwarna07]

Homework Statement

An elevator is lifted by a capble with a tension fo 50,000N. The weight of the elevator is 49,000N. How fast will the elevator be moving after 5 seconds if it starts from rest.

Homework Equations

IDK!

The Attempt at a Solution

I found the net force to be 1000N (50,000 - 49,000N)

But i can't plug it in anywhere because i don't know the mass of the elevator?

ok so a = netforce /m
a = (50000-49000) / 4900
a = .2041 m/s^2

since u know w = mg
m = w/g
mass of elevator = 49000/10 (assuming g = 10 for easier purpose)
therefore mass = 4900 kg

 

[jtwitty]

ok so a = netforce /m
a = (50000-49000) / 4900
a = .2041 m/s^2

since u know w = mg
m = w/g
mass of elevator = 49000/10 (assuming g = 10 for easier purpose)
therefore mass = 4900 kg

yay! thanks for your help :P

 

[suwarna07]

yay! thanks for your help :P

np:D