Spring Balance !
When a weight of 100 g is hung from the spring, its length is 9 cm. When a weight of 150 g is hung from it, its length is 11 cm. What is the length of the spring when there's no weight hanging from it ?
Details and Assumptions:- Answer the length in meter.
The answer is 0.05.
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1 solution
When the spring is connected with 100N F=k×m Now m = 9-x Similarly in second case m = 11-x So k=F/m Thus 0.1kg/0.09-x=0.15kg/0.11-x Solving eq 0.05x=0.0025 x=0.05