Lecturethree.doc

Lecture three
一、Translate the following academic words into Chinese。
sping state oscillation
simple harmonic motion equilibrium Position phase
initial Phase restoring force potential energy
kinetic energy amplitude Period
frequency angular frequency vibrating Curve
independent variable time axis zigzag pattern
slope trigonometric function derivative equation
differential equation phase Difference superposition
二、Write the following quantities of meaning in chinese and to represent the physical symbol,formula.
Equation of Motion of a SHM
the Force Characteristic
Oscillating Curve

三、Translate the following sentences into Chinese。
1、 Oscillation is a periodical motion in which the object moves back and forth on both sides of the equilibrium position.

2、 The resultant external force acting on an oscillator is a restoring force , which means that the force is proportional to the displacement of the oscillator but opposite in direction.

四、Provide complete and well-organized solutions with sentence-form closing statements for problems.
1、A block on the end of a sping is pulled to position x =A and released from rest. In one full cycle of its motion ,through what total distance does it travel?