Please help you who love sports!!

The place where you just let go is the maximum displacement of the spring oscillator during vibration, and the distance from this place to the equilibrium position is equal to the amplitude.

It can be seen that the ratio of the amplitude of the two before and after is a1:a2 3:6 1:2 because the period of the spring oscillator is only determined by the stiffness coefficient of the spring and the mass of the oscillator, and has nothing to do with the amplitude, so the ratio of the two cycles before and after is t1:t2 1:1

The maximum value of the recovering force is proportional to the amplitude (f-back is large k*a), so the ratio of the maximum recovering force of the two times before and after is .

F back to large 1: F back to large 2 a1: a2 1:2

It causes only a change in the (static) equilibrium position. without affecting the law of vibration.

The ratio of cycles is 1:1

The maximum ratio of regeneration is 1:1

The ratio of amplitude is 1:1

Solution: a1:a2=3cm:6cm=1:2.

Since the period is only related to k, not to the initial conditions, t1:t2=1:1.

f1max：f2max=kx1：kx2=x1：x2=1：2。

Children don't like sports, first communicate with the child, find out why the child doesn't like sports, because other children are laughing, or what, and at the same time let the child participate in group sports activities at school to encourage the child to accept the challenge.

The first is to communicate with children: when children do not like sports, first communicate and communicate with children, realize the importance of exercise, and tell children that exercise can enhance cardiopulmonary function, which is conducive to enhancing the body's resistance, avoiding the infection of upper respiratory tract viruses, and making people more energetic.

The second is to encourage children to participate in group activities at school: encourage children to actively participate in kindergarten or school exercises, so that children can feel the strength of the group in collective life, communicate with peers in group activities, and enhance friendship.

The third is to encourage children to accept challenges: encourage their children to accept challenges, understand the reasons why children are reluctant to exercise, you can first make a more reasonable exercise plan for children, set relatively small goals, and gradually extend the time and intensity of exercise.

Children are reluctant to exercise, it is recommended that parents first accompany their children to exercise, encourage children more, and make children feel happy and happy in sports.

Determination, perseverance, endurance and hope are condensed in the extended white runway! Strength, letters, hard work and struggle, gradually brightened on the distant finish line! The strong voice of the times is sounding under your feet.

It's a struggle of will. It's a challenge of speed. Victory beckons to you, victory calls to you;

Look, the end is just around the corner, listen, your classmates are shouting for you. Pluck up the courage to forge ahead, and bring hope with your honor;

Surpassing opponents and self-transcendence is our goal and our belief in the cool early autumn and the hustle and bustle of the track and field. You have ignited a fiery passion, and we are proud of you for success or failure, and you will always be our pride.

Today you are heroic, today you are vibrant, and today you are the lead. Believe in yourself, you're the best! Don't give up, don't get discouraged. Success will always be yours. Athletes: Come on!

The pace of youth, the speed of youth, the vitality of youth, and the excitement and affection of youth will be fully reflected in you. Meet yourself, challenge yourself, and overcome yourself! We're sure you'll be able to do it, come on, athletes! The end is just around the corner!

We are young and confident, the breath of youth is like the rising sun of birth, and the vigorous power is like the swaying of the sun. At this moment, the runway is our wonderful stage, and cheering is our highest award! On what success, what about honor and disgrace, there is only one belief in my heart: hard work!