Q1. Sphere pendulum has mass of 1.5 kg attached to a cord length of 11.5 m Sphere is released from rest while cord makes a 45.3 angle with vertical and pivot is frictionless. What is speed of sphere at lowest point?
Q2. A 21.5 g bullet strikes a 0.650 kg block attached to a fixed horizontal spring whose spring stiffness constant is 7.30 x 10^3 N/m and sets it into vibration with an amplitude of 21.5 cm. What was the speed of bullet before impact if the bullet and block move together after impact?