Spring A and Spring B are identical. A 50g weight is hung on Spring A, extending it by 2 cm. If two 50g weights are hung on Spring B in series (one below the other), what is the total extension of Spring B?
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Worked Solution
Step 1: In a series arrangement, each spring experiences the full weight of the load.
Step [2-9]: 100g on two identical springs in series means each spring feels 100g, but the question implies one 50g load pulling on both.
Step [2-9]: If a 50g weight pulls on the bottom spring, both springs experience the 50g force and extend 2cm each. Total = 4cm.
Correct answer: 4 cm
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