The vacuum cleaner's armature shaft S rotates with an angular acceleration of a - 4a4 rad/s², where o is in rad/s. Determine the brush's angular velocity when t - 4 s, starting from an - I nad/s, at 6- 0. The radii of the shaft and the brush are 0.25 in. and 1 in, respectively. Neglect the thickness of the drive belt.

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A: given; velocity of B towards left (VB)=3m/sAB=0.3mBD=0.6mθ=300

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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.