A block of mass m = 2.00 kg is attached to a spring of force constant k = 480 N/m as shown in the figure below. The block is pulled to a position x, = 4.25 cm to the right of equilibrium and released from rest. x=0 x= x, (a) Find the speed the block has as it passes through equilibrium if the horizontal surface is frictionless. Note that the displacement is given in centimeters, not meters. m/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. The force of friction causes an increase in the internal energy of the system and a decrease in the total mechanical energy, so the speed cannot be unchanged. m/s Need Help? Read It Watch Iit

A block of mass m = 2.00 kg is attached to a spring of force constant k = 480 N/m as shown in the figure below. The block is pulled to a position x, = 4.25 cm to the right of equilibrium and released from rest. x=0 x= x, (a) Find the speed the block has as it passes through equilibrium if the horizontal surface is frictionless. Note that the displacement is given in centimeters, not meters. m/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. The force of friction causes an increase in the internal energy of the system and a decrease in the total mechanical energy, so the speed cannot be unchanged. m/s Need Help? Read It Watch Iit