The drawing shows three identical springs hanging from the ceiling. Nothing is a

Question

The drawing shows three identical springs hanging from the ceiling. Nothing is attached to the first spring, whereas a W = 7.71-N block hangs from the second spring. A block of unknown weight hangs from the third spring. From the drawing, determine the spring constant (in N/m) and the weight of the block hanging from the third spring.

The drawing shows three identical springs hanging from the ceiling. Nothing is attached to the first spring, whereas a W = 7.71-N block hangs from the second spring. A block of unknown weight hangs from the third spring. From the drawing, determine the spring constant (in N/m) and the weight of the block hanging from the third spring.

Explanation / Answer

using second spring

F = k x

7.71 = k*.15

k = 7.71/0.15=51.4 N/m

third spring

W = k x = 51.4*.3=15.42 N

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