灵鹊做题网一道SAT物理题a pendulum has a 1 second period of vibration.at wha
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一道SAT物理题
a pendulum has a 1 second period of vibration.at what period in time would the string have to break for the pendulum bob to fly away the maximum possible distance from,but not below,the rest position of the pendulum bob?the zero point for tg.e pendulum At t=0 is at the maximum displacement
A.t=0.125s B=0.25 C=0.375 D=0.5 E=0.625
a pendulum has a 1 second period of vibration.at what period in time would the string have to break for the pendulum bob to fly away the maximum possible distance from,but not below,the rest position of the pendulum bob?the zero point for tg.e pendulum At t=0 is at the maximum displacement
A.t=0.125s B=0.25 C=0.375 D=0.5 E=0.625
嗯,这是一道用单摆来考斜抛运动的题目.
字数太少,不能详解.线速度最快时抛得最远,这个可以自己求证.
线速度最快时,就是摆锤在最低点时,即t=0.25.选B.
字数太少,不能详解.线速度最快时抛得最远,这个可以自己求证.
线速度最快时,就是摆锤在最低点时,即t=0.25.选B.
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