Consider the mechanism shown. Wheel OB is made to roll without slipping towards the right, by pulling a string at spool OA, which is rigidly attached to wheel OB. The center O of the wheel moves with a velocity of 13.50 m/s and an acceleration of 15.50 m/s^2 to the right. The angular velocity of the wheel is 19.01 rad/s clockwise. 0.71 m 0.3m O B VO String 1. Which of the following gives the direction of the acceleration of point B? 2. Which of the following statements about the accelerations is TRUE? The direction of the angular acceleration of spool OA is counterclockwise. The direction of the angular acceleration of spool OA is counterclockwise. The direction of the accelaration of point O points downwards. The line of action of the acceleration of point O is horizontal. The acceleration of point B is zero.

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Conservation of Energy

In physics, the rule of the conservation of energy states that energy doesn’t disappear from the atmosphere; instead, it changes its form from one type to another. Energy is one of the most important physical quantities in nature, and it cannot be created or destroyed — only transformed.