A block of mass m=5kg move on horizontal surface where the coefficiecnt of sliding friction μ. A spring of relaxed from length L0=0.3 meter is compressed to a length of L1=0.2 meter and released from reset pushing the block to the right. (The spring no longer push on the block after the spring reaches its relaxed length. The spring reaches relaxed length.The spring constant k=20 N/m)
1) If μk=0, what is maximum speed Vmax the block attains?
2) Which of the following graph best respreset the velocity v of the block postion x for the case with friction (μk>0)?
