When a certain spring is expanded 6 centimeters from its natural position and held fixed, the force necessary to hold it is 1200 dynes. find the work w required to stretch the spring an additional 6 centimeters

The work W required to stretch the spring an additional 6 centimeters

Explanation:

The force require to stretch the spring by 6 cm = 1200 dynes =

Displacement of from the initial position = 6 cm = 0.06 m

k = 0.2 N/m

Work done is guiven by:

Work done when spring expanded to0.0 6 cm= ..(1)

Work done when spring again expanded to 0.06 cm that is 0.12 m (0.06+0.06 m) = ..(2)

Work done(W) required to stretch the spring an additional 0.06 m: (2)-(1)

The work W required to stretch the spring an additional 6 centimeters

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answer; equivalent to a one(1) horsepower motor;