An apple weighs 1.00 n. when you hang it from the end of a long spring of force constant 1.50 n/m and negligible mass, it bounces up and down in shm. if you stop the bouncing and let the apple swing from side to side through a small angle, the frequency of this simple pendulum is half the bounce frequency. (because the angle is small, the back-andforth swings do not cause any appreciable change in the length of the spring.) what is the unstretched length of the spring (with the apple removed)?