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 = 4.05-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 = 4.05-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

f= K * (change in length)

So,

4.05 = K (35-20 )*10^-2

K= 27 N/m

Force= 27 * 30*10^-2 = 8.1 N

i.e 0.8256 kg

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