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18 November, 00:20

A spring has a spring constant of 48 N/m. The end of the spring hangs 8 m above the ground.

How much weight can be placed on the spring so that the end of the spring is 2 m above the ground?

96 N

288 N

384 N

480 N

+2
Answers (1)
  1. 18 November, 01:50
    0
    In order to determine the force needed in order for the end of the spring to be 2 m above the ground, we use Hooke's law which expressed as Force = k (x2-x1). We calculate as follows:

    F = k (x2-x1)

    F = 48 (8-2)

    F = 288 N

    Therefore, the correct answer is option 2.
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