Question

A massless and frictionless spring stretches 4.16 cm from the relaxed position when a 1.47 N...

A massless and frictionless spring stretches 4.16 cm from the relaxed position when a 1.47 N pull is exerted on it.

a.)

What is the force constant in of this spring in units of N/m ?

b.)

If the maximum distance it will be able to stretch from the relaxed position is 4.48 cm, what is the greatest force it will be able to exert?

c.)

An external agent extends the end of the spring from 2.00 cm from the relaxed position to 3.00 cm from the relaxed position. What is the work done by the external agent on the spring? Assume there are no accelerations or friction during the process. Specify the answer in joules.

d.)

An external agent extends the end of the spring from 2.00 cm from the relaxed position to 3.00 cm from the relaxed position. What is the work done by the spring on the external agent? Assume there are no accelerations or friction during the process. Specify the answer in joules.

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Answer #1

Concept - use the force and extension to find the constant of the spring . Work done by external agent will be equal to change in potential energy.

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