What does the spring scale read just before the mass touches the lower spring? I

Question

What does the spring scale read just before the mass touches the lower spring?

I got 55N.

The scale reads 17N when the lower spring has been compressed by 1.8cm . What is the value of the spring constant for the lower spring?

At what compression length will the scale read zero?

A 5.6kg mass hanging from a spring scale is slowly lowered onto a vertical spring, as shown in the figure. What does the spring scale read just before the mass touches the lower spring? I got 55N. The scale reads 17N when the lower spring has been compressed by 1.8cm . What is the value of the spring constant for the lower spring? At what compression length will the scale read zero?

Explanation / Answer

part b:

Actual weight - Apparent Wt = Force applied

55- 17 = F

F = 38

so K = F/x

K = 38/0.018

K = 2111.11 N/m
----------------------------------------------

apply F = W = Kx

x = 55/2111.11

x = 2.6 cm , at this comporession , spring balance will have zero reading

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