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Homework Help
Introductory Physics Homework Help
Rotations from angular acceleration and final angular velocity
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[QUOTE="NY152, post: 5619917, member: 608091"] [h2]Homework Statement [/h2] At a fair, Hank and Finn play with a horizontal 5.4 m long bar able to rotate about a pole going through its exact center. Hank pushes with 32 N at one end of the bar and Finn pushes with 18 N in the opposite direction at the other end. (Assume both forces are always perpendicular to the bar.) The bar rotates from rest with a constant angular acceleration of 0.35 rad/s^2. Hank and Finn were able to spin the bar up to an angular speed of 3.1 rad/s. How many turns around the pole did they make to push the bar? [h2]Homework Equations[/h2] w^2=wi^2+2(alpha)theta [h2]The Attempt at a Solution[/h2] (3.1)^2=0+(2(.35)theta theta =13.7 theta/2pi=#of rotations =2.18 rotations I don't have the correct answer for this so I have no idea if I'm doing this correct or not. [/QUOTE]
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Introductory Physics Homework Help
Rotations from angular acceleration and final angular velocity
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