A thin, uniform 3.90 kg bar, 80.0 cm long, has very small 2.50 kg 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. Find the angular acceleration of the bar just after the ball falls off. Express your answer in radians per second squared. ΑΣΦ Figure 2.50 kg Bar 2.50 kg Axle (seen end-on) 1 of 1 Submit Request Answer Part B ? rad/s² Will the angular acceleration remain constant as the bar continues to swing? If not, will it increase or decrease? remains constant increases decreases Submit Request Answer ▾ Part C Find the angular velocity of the bar just as it swings through its vertical position. Express your answer in radians per second. ΜΕ ΑΣΦ ? rad/s
A thin, uniform 3.90 kg bar, 80.0 cm long, has very small 2.50 kg 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. Find the angular acceleration of the bar just after the ball falls off. Express your answer in radians per second squared. ΑΣΦ Figure 2.50 kg Bar 2.50 kg Axle (seen end-on) 1 of 1 Submit Request Answer Part B ? rad/s² Will the angular acceleration remain constant as the bar continues to swing? If not, will it increase or decrease? remains constant increases decreases Submit Request Answer ▾ Part C Find the angular velocity of the bar just as it swings through its vertical position. Express your answer in radians per second. ΜΕ ΑΣΦ ? rad/s
Chapter2: Loads On Structures
Section: Chapter Questions
Problem 1P
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Question
Transcribed Image Text:A thin, uniform 3.90 kg bar, 80.0 cm long, has very small 2.50 kg 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.
Find the angular acceleration of the bar just after the ball falls off.
Express your answer in radians per second squared.
ΑΣΦ
Figure
2.50 kg
Bar
2.50 kg
Axle (seen end-on)
1 of 1
Submit
Request Answer
Part B
?
rad/s²
Will the angular acceleration remain constant as the bar continues to swing? If not, will it increase or decrease?
remains constant
increases
decreases
Submit
Request Answer
▾ Part C
Find the angular velocity of the bar just as it swings through its vertical position.
Express your answer in radians per second.
ΜΕ ΑΣΦ
?
rad/s
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