Space Time & Motion A.4 Rotational Mechanics (id: 65df7a55f)

本题目来源于试卷: Space Time & Motion A.4 Rotational Mechanics，类别为 IB物理学

[单选题]
A disc of mass m and5qs.tub q .bmc- rbt)4 radius r rolls without slipping from res niwmzu/yehm: rq igo/c.117j9642(wfwumu s t down an inclined n i/z7y.w2iumcf46m rqw1 hoe jguwu(:sm/ 19plane.

The moment of inertia of the disc is $frac{1}{2}​mr^2$.
Which of the following is correct about the linear acceleration of the disc and the net torque?

A. Linear Acceleration is $\frac{2}{3}$gsinθ ; Net Torque is $F_f​r$
B. Linear Acceleration is $\frac{2}{3}$gsinθ ; Net Torque is $mgsinθ$
C. Linear Acceleration is $gsinθ$ ; Net Torque is $F_f​r$
D. Linear Acceleration is $gsinθ$ ; Net Torque is $mgsinθ$


参考答案:  A


本题详细解析:

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