Auniform hollow disk has two pieces of thin light wire wrapped around its outer rim and is supported from the ceiling (See the figure below (Eigure 1)). Suddenly one of the wires breaks, and the remaining wire does not slip as the disk rolls Part A down. Use energy conservation to find the speed of the center of this disk after it has fallen a distanoe of 2.20 m. O BI ? Vem- 5.7 m/s Submit Previous Answers Request Answer X Incorrect; Try Again; 5 attempts remaining Provide Feedback

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4. Two wheels (A and B) of equal mass and the same Iz roll down a hill without sliding and have the same kinetic energy.  Partway down the hill, wheel B stops rolling and continues down the hill sliding (no rotation), but maintains the same kinetic energy as wheel A which continues to roll without sliding.  Which wheel reaches the base of the hill first (assuming they travel the same path length)? wheel A (the one that rolls the whole way) wheel B (the one that starts sliding) they reach the hill base at the same time

A ball weighing 0.2kg rolls along the ground. It has a speed of 3 m/s eventually rolls up a hill. a). Calculate the total energy of the ball b). At its highest point on the hill, the ball as a height of 0.1m above the ground. Is energy conserved for the ball?