[問題] 兩題物理
1.two cylinder and rotational inertia about their central axes are supported
by axles perpendicular to the plane. the large cylinder is initially rotating
clockwise with angular velocity W. the small cylinder is moved to the right
until it touches the large cylinder and is caused to rotate by the frictional
force between the two. eventually, slipping ceases, and the two cylinders
rotate at constant rates in opposite directions
A.find the final angular velocity W' of the small cylinder
B.why does neither angular momentum nor kinetic energy conserve
(恩...請自己畫兩個圓盤 為 I1 I2 R1 R2)
2.the particle of mass m slide down the frictionless surface through height
h and collide with the uniform vertical rod (mass M rotational inertia I),
sticking to it. the rod pivots about point O through the angle theta before
momentarily stopping. find theta.
(恩...m從一個半徑h的弧形軌道下滑 黏上杆子的末端)
沒有圖...sorry
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