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

11th Edition

ISBN:9781305952300

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter1: Units, Trigonometry. And Vectors

Section: Chapter Questions

Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...

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Question

Please help

n vottball,the pitcher throws under hand With the arm qully
atended (Straight at the elbun). In agatpitch the ball, 07 mass m -
O-134 Kg, leaves the hand at aspeed 07 139 Km/h,nhen The arm is
fointed verricaIy dunnward.
Part A:Find the rotational kineticenergt,in joules,07me
PItcher is arm ball system, given that the armis moment Ainertia
1s 0.75 kq°m and the ball leaver the hand at a distance o7 OoLOsm
Arom the PiVot.
KE(O+こ?
PartB: What 7orce,in newtons,do the muscles exert to cauje the
arm To rotate, assuming the torce is constant and 15 epective
perpendicular lever arm is do2 cm? ASsume also that thepitcherss
arm starts extended nor120ntalybehind her at rest and the ball s
releascd at the bottom 07theswing as deScYibed in part ca),
Approximate the arm as a unizorm rod.
F=?

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