Question

PILL A block is hanging from the end of a horizontal bar which pivots about an axis through its center and is initially stationary. The bar is released and begins rotatine As the brothermal vertical, the magnitude of the rotational acceleration of the bar Increases O decreases remains the same increases, then decreases decreases, then increase Question 8 5 pts The figure shows scale drawings of four objects, each of the same mass and uniform thickness, with the mass distributed uniformly. Which one has the greatest rotational inertia when rotated about an axis perpendicular to the plane of the drawing at point ? А B C OA OB OD The rotational inertia is the same for all of these objects

Both and please show your work.

Answer 1

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て=IX 7.) =) Tax T= Mg x hrine line = Txo mg as rod rotates o decreases so, to roue will decrease. So angular acceleration will decrease option (b) is correct. Anwar 8 IA MR? - IR = (MR37 I = MR² In = mph)? Amp 223) since, R2>R 12 12 clearly, IB is greatest option (B) is correct