Friday

April 18, 2014

April 18, 2014

Posted by **Anne** on Tuesday, April 9, 2013 at 1:07pm.

2)A force of 100N stretches an elastic spring to a total of 20cm. If an additional force of 100N stretches the spring 5cm further,find the natural length of the spring.

3)The total length of a spring when a mass of 20g is hung from its end is 14cm,while its total length is 16cm when a mass of 30g is hung from the same end. Calculate the unstretched length of the spring assuming Hooke's law is obeyed.

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