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【考情分析】力涉及到重力、弹力、摩擦力、万有引力、分子力、电场力、安培力、洛仑兹力、核力等.受力分析是解决问题的关键.力和运动的基本规律和思维方法运用于牛顿运动定律、运动学公式、图象、动能定理和机械能守恒定律、圆周运动、带电粒子在电场、磁场中的运动等主干知识.学好曲线运动的概念和规律,有助于加深对速度、加速度及两者关系的理解,提高应用牛顿运动定律分析和解决实际问题的能力,还可以为复习振动和波、带电粒子在电磁场中的运动等知识作好准备.平抛运动和匀速圆用运动是牛顿运动定律在曲线运动中的具体应用.
Analysis of the test force involves gravity, elasticity, friction, gravitation, molecular force, electric field force, ampere, Lorentz force, nuclear force, etc. Stress analysis is the key to solving the problem. The basic laws of force and movement And thinking methods are applied to the Newtonian laws of motion, kinematics, images, kinetic energy theorem and the law of conservation of mechanical energy, circular motion, the movement of charged particles in the electric field and magnetic field knowledge etc. Learning the concept and regularity of curve motion, Deepen the understanding of the relationship between speed, acceleration and the relationship between the two to improve the ability to apply Newton's laws of motion to analyze and solve practical problems, and to prepare for the review of the knowledge of vibration and waves and the movement of charged particles in the electromagnetic field. The uniform circular motion is a concrete application of Newton's law of motion in curvilinear motion.