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Physics Undergraduate

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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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English Senior High

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ーートーaauiaoauuc ru VS Y 8 言守 商題 次の英文を読み、 空材に最も適したものをそれぞれ選び、記号で答えなさ い。 he State University olice Department is a full_service in-house police departrnent With professional police officers detectives, and cormrmunity service officers_ 下he prirmary objeciives of the State University Police areyour Safety and the rnaintenance of a Camnpus atmosphere conducive_to ( 1 ) achievement.) We feel it is vitay innportant that you be aware of our operation, how we can assist yougnd how you can 8SSiS+ ns. 思m 生REGRBH to crime prevention, investigation,and parking contro1,。 the Sra存 ta thefollowimg( 2 ) tothe carmnpus comrmunity- ^ Persona】 Safefy Seminars: he State University Police conducts Serninars /wvhich discuss faccs apout<how students can ( 3 ) carmpus safety. " Bicyce Regzsfration: Register yonur bicycle with the Departrmnent to help prevent effs. 『 所Scorf Program: An escort program iS provided during hours of darkness、 Escorts ma wtn sfudents om cassroom buildings or the library te-でithin IA失) gsfance 末orn he cammpus. Escorts mmay.be requested by calling the Department. 『 のOperation 了エD.: ne State University Police, free of charge, will 1end You an engraver #o mark your valuable items with your ID. number or Driver's License nnDer, 妙e aso( 5 )you wida form to record your property,(SQ 央 can he た refurnedG JosE. キネ M記-末azard Gujdance: Earthquakke andi disaster preparedness at constantty pejng reyjewed and 呈家ed campus-wide。 Your ( 6.)should be directed to the pmyronmenfa】 Jealfh( 'and Safety Ofie に がirsr 4ig hen te Uriversity Health 加 closed, assistance with emergency nedjca7 propJes can be obtained、 Dial 2222 )3ny yellow campus (。7、) ar 9 ピ

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