​A2物理公式和考点总结来了 面临大考的你应该记住这些高频考点

虽然今年AQA和爱德思相继取消了夏季大考，但是CIE考试局仍然如期举行，为例让大家在大考中都能够考出好成绩，下面给大家分享一些A2物理公式和考点总结，希望大家都能拿到A星。

A2物理公式和考点总结

弧度

Angles can be measured in radians .An angle of 2π rad is equal to 360°

圆周运动，角距离，角速度，线速度

An object moving at a steady speed along a circularpath has uniform circular motion .
The angular displacement O is a measure of the anglethrough which an object moves in a circle .
The angular velocity w is the rate at which the angulardisplacement changes ：

For an object moving with uniform circular motion ，speed and angular velocity are related by v=wr.

向心力，向心加速度

The resultant force acting on an object moving ina circle is called the centripetal force . This force isdirected towards the centre of the circle and is at rightangles to the velocity of the object .
An object moving in a circle has a centripetalacceleration a given by：

The magnitude of the centripetal force F acting onan object of mass m moving at a speed vina circleof radius risgivenby：
   

万有引力

Newton 'slaw of gravitation states that：
Any two point masses attract eachother with a forcethat is directly proportional to the product of theirmasses and inversely proportional to the square oftheir separation .
The equation for Newton 'slaw of gravitation is：

引力场

The gravitational field strength gata point is thegravitational force exerted per unit masson a smallobject placed at that point -thatis：

The external field of a uniform spherical mass is thesame as that of an equal point mass at the centre ofthe sphere .
The gravitational field strength at a point is thegravitational force exerted per unit masson a smallobject placed at that point ：

On or near the surface of the Earth ， the gravitationalfield is uniform ，so the value of gis approximatelyconstant .Its value is equal to the acceleration offreefall .

重力势

轨道周期，速度

简谐振动

阻尼

共振

本文对ALEVEL物理知识点的整理就到这里，希望对你有帮助。 

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