線軸狀剛體平面平行運動實驗簡析
發(fā)布時間:2018-12-17 08:03
【摘要】:用細絲線拉動線軸狀剛體在水平平面桌面上(或水平導軌上)的運動,是典型的平面平行運動.改變細絲線拉力的傾角或方式,線軸狀剛體可以有多種不同的運動狀態(tài),因此這是一個有趣的演示實驗.之所以線軸狀剛體有多種運動狀態(tài),關鍵因素是線軸狀剛體在作純滾動時它與平面桌面或導軌之間的相互作用力是靜摩擦力,靜摩擦力可以在一定范圍連續(xù)變化以使線軸狀剛體的運動能夠滿足動力學方程和運動學方程.當所需要的靜摩擦力超出其最大允許值時,線軸狀剛體與平面桌面或導軌之間將出現(xiàn)滑動,二者之間的摩擦力將由靜摩擦力變?yōu)榛瑒幽Σ亮?純滾動狀態(tài)將消失.
[Abstract]:The motion of the linear axis rigid body on the horizontal plane table (or on the horizontal guide rail) is a typical parallel motion of the plane. It is an interesting demonstration experiment to change the inclination or the way of the wire pull force, the linear axis rigid body can have many different motion states, so this is an interesting demonstration experiment. The key factor is the static friction between the linear axis rigid body and the plane table or the guide rail when the linear axis rigid body is in pure rolling, and the main reason is that the linear axis rigid body has a variety of motion states. The static friction force can change continuously in a certain range so that the motion of the linear axis rigid body can satisfy the dynamic equation and kinematics equation. When the required static friction force exceeds its maximum allowable value, there will be sliding between the linear axis rigid body and the plane table or guide rail, the friction between them will change from static friction to sliding friction, and the pure rolling state will disappear.
【作者單位】: 清華大學物理系;
【分類號】:O313.3
本文編號:2383930
[Abstract]:The motion of the linear axis rigid body on the horizontal plane table (or on the horizontal guide rail) is a typical parallel motion of the plane. It is an interesting demonstration experiment to change the inclination or the way of the wire pull force, the linear axis rigid body can have many different motion states, so this is an interesting demonstration experiment. The key factor is the static friction between the linear axis rigid body and the plane table or the guide rail when the linear axis rigid body is in pure rolling, and the main reason is that the linear axis rigid body has a variety of motion states. The static friction force can change continuously in a certain range so that the motion of the linear axis rigid body can satisfy the dynamic equation and kinematics equation. When the required static friction force exceeds its maximum allowable value, there will be sliding between the linear axis rigid body and the plane table or guide rail, the friction between them will change from static friction to sliding friction, and the pure rolling state will disappear.
【作者單位】: 清華大學物理系;
【分類號】:O313.3
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