gc textbook chapter 8 Rotational Motion (id: db23c4ed4)

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

[填空题]
The forearm in Fig. 8–45 accelerates a 3.6-kg ball a;cqprvm*qnm5ua5o06 l 2/zcz : jd+tv0;l ev6 );,;0fhpxe;sh* l0oq,ptggctbta vn t 7 $m/s^2$ by means of the triceps muscle, as shown. Calculate
(a) the torque needed,    $m \cdot N$
(b) the force that must be exerted by the triceps muscle. Ignore the mass of the arm.    N

参考答案:
空格1: 7.812±2%  空格2: 310±2% 


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