Elevator problem; but i don't have the mass

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    Elevator Mass
AI Thread Summary
The discussion revolves around calculating the speed of an elevator after 5 seconds, given a tension of 50,000N and a weight of 49,000N. The net force acting on the elevator is determined to be 1,000N. The mass of the elevator is calculated to be 4,900 kg by dividing its weight by the acceleration due to gravity (assumed to be 10 m/s²). Using the net force and mass, the acceleration is found to be approximately 0.2041 m/s². The participants express satisfaction with their understanding and calculations.
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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?
 
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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? :/
 
jtwitty said:

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
 
suwarna07 said:
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
 
jtwitty said:
yay! thanks for your help :P

np:D
 
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