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Unformatted text preview: F. Also find the vertical forces on the rollers at A and B. 2 Problem 5 The uniform bar of mass m and length L is moving horizontally with a velocity v on its light end rollers. Determine the force under roller B an instant after it passes point C and prior to mechanical interference with the path. At what velocity v will the force under roller B be zero? Problem 6 In an investigation of whiplash resulting from rear-end collisions, sudden rotation of the head is modeled by a homogenous solid sphere of mass m and radius r pivoted about a tangent axis (at the neck). If this axis at O is given a constant acceleration a, with the head initially at rest, determine expressions for the initial angular acceleration of the head and its angular velocity as a function of the angle of rotation. Assume that the neck is relaxed so that no moment is applied to the head at O. a O = a *Problems derived from Meriam &amp; Kraige and Bedford &amp; Fowler 3...
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- Fall '09