5. DETAILS MY NOTES ASK YOUR TEACHER A block of mass m = 2.00 kg is attached to a spring of force constant k = 600 N/m as shown in the figure below. The block is pulled to a position x; = 5.80 cm to the right of equilibrium and released from rest. wwwww m x=0 x= X; (a) Find the speed the block has as it passes through equilibrium if the horizontal surface is frictionless. n/S (b) Find the speed the block has as it passes through equilibrium (for the first time) if the coefficient of friction between block and surface is # = 0.350. m/s 6 DETAILS MY NOTES ASK YOUR TEACHER The coefficient of friction between the block of mass m, = 3.00 kg and the surface in the figure below is u = 0.210. The system starts from rest. What is the speed of the ball of mass my = 5.00 kg when it has fallen a distance h = 1.30 m? m/s m mz