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we must apply a force of magnitude 84.0 N to hold the block stationary at x=-2.0

ID: 2176744 • Letter: W

Question

we must apply a force of magnitude 84.0 N to hold the block stationary at x=-2.0 cm. From that position, we then slowly move the block so that our force does +6.0 J of work on the spring?block system; the block is then again stationary. What are the block's positions, in cm? ((a) positive and (b) negative)

we must apply a force of magnitude 84.0 N to hold the block stationary at x=-2.0 cm. From that position, we then slowly move the block so that our force does +6.0 J of work on the spring?block system; the block is then again stationary. What are the block's positions, in cm? ((a) positive and (b) negative)

Explanation / Answer

84=k*0.02 k=4200N/m 0.5*4200*x^2=6 x^2=12/4200 x=+/- 5.345 cm