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

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admin 发表于 2024-2-5 19:55:56 | 显示全部楼层 |阅读模式
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 and radius r l:ic39re s gjbriav5,,ce.- f9,eu7z mo1+ ssq(,cdbw j7jvxrolls without slipping from rest down an inclined v 7 z19ow s+c,uxbesdjq (mj,7plane.

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


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