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One end of a horizontal spring with force constant 130.0 N/m N / m is attached...

One end of a horizontal spring with force constant 130.0 N/m N / m is attached to a vertical wall. A 5.00-kg k g block sitting on the floor is placed against the spring. The coefficient of kinetic friction between the block and the floor is μk μ k = 0.400. You apply a constant force F⃗ F → to the block. F⃗ F → has magnitude 81.0 N N and is directed toward the wall. The spring is compressed 80.0 cm c m .

a)What is the speed of the block?

b)What is the magnitude of the block's acceleration?

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Answer #1

use work energy theorem to find the final velocity after a 80cm displacement.

Using this velocity and displacement solve for acceleration.

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