Question

A 60-cm spring will stretch (in cm) one third the weight (in kg) attached to it. How long will the spring be if a 20-kg weight is attached?

Answer 1

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Answer:

  66 2/3 cm

Step-by-step explanation:

The weight in kilograms is 20, so the stretch in cm is 20/3 = 6 2/3 cm.

When the 60 cm spring is stretched an additional 6 2/3 cm, its length will be ...

  60 +6 2/3 = 66 2/3 . . . cm