Exercise 6.33 bottom spring: Three identical 4.80 kg masses are hung by three id

Question

Exercise 6.33 bottom spring: Three identical 4.80 kg masses are hung by three identical springs, as shown in the figure. Each spring has a force constant of 3.80 kN/m and was 19.0 cm long before any masses were attached to it. How long is each spring when hanging as shown? (Hint: First isolate only the bottom mass. Then treat the bottom two masses as a system. Finally, treat all three masses as a system.XFigure 1) 11-0.22 Submit Incorrect; Try Again; 5 attempts remaining Part B ] ? Part C top spring:

Explanation / Answer

m = 4.8 kg

k = 3800 N/m

If x is the extension of each spring:
4.8* 9.81 = 3800*x
x = 12.4 * 10^(-3) metres.

The length of each spring is therefore:
0.19 + 0.0124
= 0.2024 m

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