2. [I1.17 Points] DETAILS SERCP11 13.1.P.003. 0/20 Submissions Used MY NOTES ASK YOUR TEACHER The force constant of a spring is 135 Mm. (a) Find the magnitude of the force required to compress the spring by 5.00 cm from its unstretched length. N (b) Find the magnitude of the force required to stretch the spring by 7.48 cm from its unstretched length. N Need Help? _' 3. [I1.17 Points] DETAILS SERCP11 13.2.P.008. 0/20 Submissions Used MY NOTES ASK YOUR TEACHER A block of mass m = 2.00 kg is attached to a spring of force constant k = 5.25 x 102 N/m that lies on a horizontal frictionless surface as shown in the figure below. The block is pulled to a position XI- = 4.85 cm to the right of equilibrium and released from rest. Willilla .. x=0 x=x- (a) Find the the work required to stretch the spring. J (b) Find the speed the block has as it passes through equilibrium. m/s Need Help? _'_' Submit