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 and radius r rolls without slipping fr ish:3-2 m6ktzn*mqi mommp(9a -lgxgile085j+5c o;qr an f7ha rest down an inclined pl5pm8i gq 9hlaj ;- a+lxorf(5ecn0a7gane.

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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