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物理 大学生・専門学校生・社会人

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【1 】As shown in Figure 1, here ame an object Aof mass AZ B ofmass 7 and Cof mass r On a smooth and horizontal surfce. A and B mre inlerconnected by a spring. The Spring has the naumi lcngth of / and a spring constant た A。 B, and C are on one straight Hime and can move along the stmight line. Tuke the right direction as positive fbr velocity Neglect the mass of the spring and air resistanee 国1に示すように, 水平でなめらかな台の上に質量 /の2つの物体 A, Bと質 基wの物体Cが静止している、A と Bはばね定数たで自然散7 のばねで結ばれ てでいるAB,Cは一直線上にあり, この直線上のを動くものとする. 速度の 向きは図の右向きを正にとるものとする. ばねの質基と空気抵抗は無視できる. (①) A and B are oscillated symmetically so ss for center of mass of A and B imtereonnccted by a spdng to be fixed. Find 7, the Gimc pcriod of the oscillgtion. ばねで千ばれた A と B の重心動かないように, A とB の重心に関して左右対 -称に振動させた場合の周期了を求めよ. Next A and B are atrest. The length of the spring is the natural length / で moving speed yo collides perfect-elastically with A. It is assumed that A and C are rigid, the coHlision occurs very shortly and the displacement during the colision is neglected Moreover iis also assumed tbat after the collision。 A snd C do not have nother の 次に, A と B をばねの長さが自然長 7 になる位置で静止させて, C を左から y の速度で A に衝突させる. この衝突は完全弾性衝突であり, かつ物体が非常に かたくて衝突は極めて短時間に行われ, 衝突中の変位の大きさは無視できるも のとする. さらに, Aと Cは一度笑突した後再びぶつからないものとする- の Find tie velociies yand ycofAand Cimmediaedy Ner he colison。 respectiweiy 衝突直後の A と C の速度w vcを求めよ. ⑬) Find the velocity yoof the cemlerofmassofAand B using が6 and ye 衝後の A と B の重心の束度woを44を用いて表せ (④ Find mc minimum lengtb ofthe pcng sferthe colision ing ヶ。 4 we かた 衝突後, Aと B が最も近接したときのばねの長さを ヵ, 7 w。 4を用いて表せ。 も Hi

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英語 高校生

長文の解き方教えてください!

【 1 】 決の英文を読み、設問に答えなさい。 Michael Jordan, often known by his initials "MI", is perhaps the most famous professional athlete the world has ever known。Born on February 17, 1963 in Brooklyn. New York, Jordan is considered by many people to be the best basketball player to have ver lived. The start of his career as a professional basketball player, however, was not as easy as most people would imagine. The first time Jordan tried to join a basketball team was in his second year in high school. At that Gme he was 1.8 m tall, which was seen as being too short for the high school varsity* team。 so he could not be a member of the team. Determined to join the team the following year, he trained very hard and happened to grow 10 cm. As a result he joined the varsity team and became one of the best high school players in the U.S. during his final year in high school. Jordan later said that he wanted to be the best basketball plgyer ever because he was disappointed about not being able tojoin the team on hi fret ty Afer high school, Jordan attended the University of North Carolina。 which has one of the top university basketball programs in the county. Im just his feshman year。 Jordan scored the winning shot in the 1982 NCAA* championship game, a shot which Jordan laer described as the tuming point in his amazing career. He sayed at the Uniersiy Norh Carolina or tvo more years and then chose to skip his fnal year in college to join

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