A2.50kg block on a horizontal floor is attached to a horizontal spring that is initially compressed 0.0350m . the spring has force constant 895n/m . the coefficient of kinetic friction between the floor and the block is 0.45 . 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 0.0150m from its initial position? (at this point the spring is compressed 0.0200m .)

Suppose that a mass of 2 kg is attached a spring whose spring constant is 50. the system is damped such that b = 12 . the mass is set in motion with an initial velocity of -8 m/s at a position 0 meters from equilibrium. set up and solve a differential equation that models this motion. write your solution in the form a cos ( ω t − α ) where α is a positive number. use your solution to fill in the information below: what is the amplitude of the motion? what is the value of ω ? what is the phase shift?