A vector v is given as function of time t by v = ti +tj+tk m/s, where (i, j, k ) are unit vectors whose directions are fixed in the frame H. The angular velocity of H in frame Ris wHR = ti +t2j +t³k rad/s. Find the magnitude of the derivative of v in frame R, that is Ri, at t = 1.67 s.

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Q: To calculate the angular speeds of the two bars B2 and B3, you need to use the two point formula:

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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.