A thin, uniform $3\mathrm{.}60kg$ bar, $80\mathrm{.}0cm$ long, has very small

$2\mathrm{.}50kg$ balls glued on at either end $($Figure $1).$ It is

supported horizontally by a thin, horizontal, frictionless

axle passing through its center and perpendicular to the

bar. Suddenly the right$-$hand ball becomes detached and

falls off, but the other ball remains glued to the bar.

Figure

Find the angular acceleration of the bar just after the ball falls off.

Express your answer in radians per second squared.

$|{}_z|=$

$ra\frac{d}{s^2}$

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Part B

Will the angular acceleration remain constant as the bar continues to swing? If not, will it

increase or decrease?

remains constant

increases

decreases

Previous Answers

Correct

Part C

Find the angular velocity of the bar just as it swings through its vertical position.

Express your answer in radians per second.