A boat loaded with scrap iron floats in a swimming pool. When the iron is thrown overboard, the pool level will
A) rise.
B) fall.
C) remain unchanged.
Question 2
A 0.50-kg object is attached to an ideal massless spring of spring constant 20 N/m along a horizontal, frictionless surface. The object oscillates in simple harmonic motion and has a speed of 1.5 m/s at the equilibrium position.
(a) What is the amplitude of vibration? (b) At what location are the kinetic energy and the potential energy of the system the same?