In sottball, the pitcher thD WS under hand With the xtended (Staight at the elbuw), In agastpitch the ball, 07 mass m - 0-134 kg, leaves the nand at aspeed 07 139 kmlh,nhen The arm is Pointed verricaIy dunnnard. Rart A:Find the rotational kinetic entrgiin joules,07me PItcher is arm ball system, given that the armis moment Ainertia i50.75 kg•m° and the ball leaver the hand at a distance o7 OoLOsm. Arom the Pivot. KEOT PartB: What 7orce, in newtons,do the muscles exert to cauje the arm To rotate, assuming the torce is constant and s epective perpendicular lever arm is 8 •2 cm? Asjume also that the pitcherss aym starts extend ed norizontaly behind her at rest and the ball is released at the bottom 07 thes mingj as described in part ca Approximate the arm as a uni7urm rodo こ? F=?

In sottball, the pitcher thD WS under hand With the xtended (Staight at the elbuw), In agastpitch the ball, 07 mass m - 0-134 kg, leaves the nand at aspeed 07 139 kmlh,nhen The arm is Pointed verricaIy dunnnard. Rart A:Find the rotational kinetic entrgiin joules,07me PItcher is arm ball system, given that the armis moment Ainertia i50.75 kg•m° and the ball leaver the hand at a distance o7 OoLOsm. Arom the Pivot. KEOT PartB: What 7orce, in newtons,do the muscles exert to cauje the arm To rotate, assuming the torce is constant and s epective perpendicular lever arm is 8 •2 cm? Asjume also that the pitcherss aym starts extend ed norizontaly behind her at rest and the ball is released at the bottom 07 thes mingj as described in part ca Approximate the arm as a uni7urm rodo こ? F=?

College Physics

1st Edition

ISBN:9781938168000

Author:Paul Peter Urone, Roger Hinrichs

Publisher:Paul Peter Urone, Roger Hinrichs

Chapter6: Uniform Circular Motion And Gravitation

Section: Chapter Questions

Problem 16PE: Olympic ice skaters are able to spin at about 5 rev/s. (a) What is their angular velocity in radians...

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