- #1

simphys

- 324

- 46

- Homework Statement
- An elevator cable breaks when a 925-kg elevator

is 22.5 m above the top of a huge spring

at the bottom of the shaft. Calculate

(a) the work done by gravity on the elevator before it hits the

spring; (b) the speed of the elevator just before striking the

spring; (c) the amount the spring compresses (note that here

work is done by both the spring and gravity).

- Relevant Equations
- WE principle + w=Fd

I don't understand what I have done wrong in part (c) I have the initial velocity for the second part of the motion and have the final velocity zero and then the net work done is W_mg + W_Fs and the actual answer for x is 2.37m

Could I get some help/tips please, thanks in advance.

Here is my solution

small edit: After getting V_2 = 21m/s,

Could I get some help/tips please, thanks in advance.

Here is my solution

small edit: After getting V_2 = 21m/s,

**x = 3.19m and**__the ,(comma) is a decimal point here! .(dot) is multiplication__
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