Question

A 4kg block on a friction less table
is attached to a horizontal spring
with k = 400N/m .The spring is
initially compressed by 5cm. Find
the work done on the block by the
spring as the block moves from
5cm to equilibrium position?
1) 2.5 J
2) 0.5 J
3) 1.5 J
4) 10 J


please answer this please answer
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Answer 1

Answer:

4

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