3.23 by Paul is licensed under a Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International License.

# 3.23

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3.23 by Paul is licensed under a Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International License.

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In the equation for rmax, when you plug in zeta, you end up having to take a square root of a negative number.

Oops, that was a copy error. The equation for is found on pg. 75 of the text and it is actually given as below.

Notice the plus sign in there. Sorry about that.

Why do we neglect the weight of the cart?

I've neglected the weight because of the equilibrium assumption. The problem didn't specifically state that the system begins in equilibrium, but the context of the system told me that it was appropriate. (Consider how often you see a car in a position where its springs are unstretched.)

This problem is the same as 3.30 in the 11th edition

The numerator of G(r) is missing r^2

Right you are! Did I leave it out of the calculations, or did I just forget to write it?

To my knowledge the calculations were correct

shouldn't the maximum velocity unit be meter per second not km/hr? You already converted it to m/s prior to solving for it.

thank you

If memory serves the problem asks for the result in km/hr.

Did you forget to multiply L in the omega equation by 3600? In the denominator?

Ignore that I see its 0.278