Verifying Calculating Force on Elevator Support Cable

AI Thread Summary
The discussion focuses on calculating the force acting on an elevator's support cable, given its mass of 1.10e3 kg and an upward acceleration of 0.45 m/s². The formula used is F=ma, incorporating gravitational acceleration of 9.8 m/s². The calculated force is 1.12e4 N, with attention to significant figures based on the problem's original data. Participants confirm the calculation and discuss the significance of proper significant figures in the answer. The context includes a take-home test, highlighting the use of online resources for assistance.
ilkjester
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Pretty sure I got it right just going to ask you guys to make sure.

Homework Statement


An elevator with a mass of 1.10e3 accelerates upward at 0.45 m/s squared. What is the force acting on the elevator's support cable?


Homework Equations


F=ma


The Attempt at a Solution


The 9.8 is for gravity.
f=(1.10e3)(0.45+9.8)
f=1.12e4
I think I got the right amount of sig figs to but I am not to good with those.
 
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Looks right to me.
 
Looks good. The general rule of thumb for the # of sig figs is to look at the original problem; whatever the LOWEST amount of sig. figs. used in the problem statement is, is what you should give your answer in.

Casey
 
Thanks guys We have a take home test this week and I am feeling pretty good about it. I don't get the whole take home part though because were aloud to use the internet and whatever but if i have any questions ill be sure to ask.
 
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