gc textbook chapter 8 Rotational Motion (id: 6a5cba8b7)

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本题目来源于试卷: gc textbook chapter 8 Rotational Motion，类别为 unclassified

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A hammer thrower accelerates the hammer fromdkdp/l: fj*1bvqp u5ecr39 )o rest wito7h08a ( icjcb6ow. idr4gp h;hin four full turns (revolutions) and releases it at a spee8jwi c 7d;h(aihoro0.gb 6cp4d of 28 $m/s$ Assuming a uniform rate of increase in angular velocity and a horizontal circular path of radius 1.20 m, calculate
(a) the angular acceleration,    $rad/s^2$
(b) the (linear) tangential acceleration,    $m/s^2$
(c) the centripetal acceleration just before release,    $m/s^2$
(d) the net force being exerted on the hammer by the athlete just before release,    N
(e) the angle of this force with respect to the radius of the circular motion.    $^{\circ} $

参考答案:
空格1: 10.8±2%  空格2: 13±2%  空格3: 653±2%  空格4: 4770±2%  空格5: 1.14±2% 


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