a grind stone that rotates 2000 rev/min requires 50s to come to a stop. find the angular acceleration of the grind stone. how many radians does it turn through before stopping.​

A10-kg piece of aluminum sits at the bottom of a lake, right next to a 10-kg piece of lead, which is much denser than aluminum. which one has the greater buoyant force on it? explain. b - the aluminum a) both have the same buoyant force. b) the aluminum c) the lead d) it cannot be determined without knowing their volumes.