A force of 170 N stretches a spring 0.070 m beyond its unstretched length. What

Question

A force of 170 N stretches a spring 0.070 m beyond its unstretched length. What magnitude of force is required to stretch the spring 0.015 m beyond its unstretched Express your answer using two significant figures. What magnitude of force is required to compress the spring 0.020 m? Express your answer using two significant figures. A force of 170 N stretches a spring 0.070 m beyond its unstretched length. How much work must be done to stretch the spring 0.015 m beyond its unstretched Express your answer using two significant figures. How much work must be done to compress the spring 0.020 m from its unstretched Express your answer using two significant figures.

Explanation / Answer

F=-kx

F=170N

x=0.070m

hence

k=170/0.070N/m

force needed to

strech 0.015m=kx=170*0.015/0.070N=36.43N

force to compress by 0.020m=170*0.020/0.070N=48.57N

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