ateH21 .00O PM End Date: 122018 5:00:00 PM Il pitcher throws the ball in a motio
ID: 1864701 • Letter: A
Question
ateH21 .00O PM End Date: 122018 5:00:00 PM Il pitcher throws the ball in a motion where there is rotation of the forearm about the elbow joint as well as other movements. Randomized Variables 1=0.475 kg·m? v= 22 m/s d 0.44 m ?If the linear velocity of the ball relative to the elbow joint is 22 ms at a distance of O 44 m from the Joint and the moment of inert forearm is 0.475 kg m2, what is the rotational kinetic energy of the forearm in 3? Grade Deducti Potentia sin0 cosO cotanO asin acos0 atanO acotansinh0 coshO tan cotanhO Degrees Radians Submis Attemp (0% pe detailed Submit Hnt give up deduction per feedback. Hints:??deduction per hint. Hints remaining:- Feedback:Explanation / Answer
Given,
distance , d = 0.44 m
speed of the joint , v = 22 m/s
the angular speed , w = v/r
w = 50 rad/s
moment of inertia , I = 0.475 kg.m^2
the rotational kinetic energy of the forearm, KE = 0.5 * I* w^2
KE = 0.5 * 0.475 * 50^2 J
KE = 593.75 J (Ans)
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