Springs & Elastic Potential Energy Video Lessons

Example

# Problem: A 2.55 kg block on a horizontal floor is attached to a horizontal spring that is initially compressed 0.0360 m . The spring has force constant 855 N/m . The coefficient of kinetic friction between the floor and the block is 0.41 . The block and spring are released from rest and the block slides along the floor.What is the speed of the block when it has moved a distance of 0.0160 m from its initial position? (At this point the spring is compressed 0.0200 m .)

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###### Problem Details

A 2.55 kg block on a horizontal floor is attached to a horizontal spring that is initially compressed 0.0360 m . The spring has force constant 855 N/m . The coefficient of kinetic friction between the floor and the block is 0.41 . The block and spring are released from rest and the block slides along the floor.

What is the speed of the block when it has moved a distance of 0.0160 m from its initial position? (At this point the spring is compressed 0.0200 m .)