A person walks radially inward on a platform that is rotating counterclockwise about its center. Knowing that the platform has a constant angular velocity ω and the person walks with a constant speed u relative to the platform, what is the direction of the acceleration of the person at the instant shown? a. Negative x b. Negative y c. Negative x and positive y d. Positive x and positive y e. Negative x and negative y

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Q: In order to uncoil electrical wire from a 0.6-m-radius spool fixed to a truck, a worker drives to…

A: Given :-VA=5 ms   ,   R=0.6mVB=3 ms  ,t=40 mm=0.04 mVA=wy5=wy-1VB=WR+t-y3=W0.6+0.04-ySolving…

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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.