(Answered) A spring and block are in the arrangement of fig when the

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A spring and block are in the arrangement of Fig. When the block is pulled out to x = + 4.0cm, we must apply a force of magnitude 360 N to hold it there. We pull the block to x = 11 cm and then release it. How much work does the spring do on the block as the block moves from xi = +5.0 cm to

(a) x = + 3.0 cm

(b) x = - 3.0 cm,

(d) x = - 9.0 cm?

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