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物理 高校生

(3)と(4)の途中式含め解き方を教えてください。

8 水平面上に質量M [kg]の物体Aを置き, 糸をつけ, 滑車を通して M T A 図のように質量m[kg]のおもりBをつるし た。 次の問いの答えとして当てはまる式をそ れぞれ選択肢から選びなさい。 ただし,重力 加速度の大きさをg [m/s2] とする。 (完答各3点) 1) 水平面がなめらかなとき, おもりBの加速 度aB[m/s2] を求めよ。 ap = [m/s2] 1) の選択肢 ①M②m ③M+m ④ Mg ⑤mg ma= ma - tw (M+m)a=mg mg a= mg Mtm mg Ama=T B W = mg B mas²-t+w 2mg+m M + ⑥ (M+m)g 2 -ma Bmap=-T+mg mg. m Mx0=T: -f + - mg ART-END 7 00: +=T= mg 静 つりあい (2) 水平面をあらい面に変えるとおもりBは動かなかった。 物体Aには たらく摩擦力の大きさ R [N] を求めよ。 R = [ガ] [N] 2) の選択肢 ①M②m ③ Mg ④mg roka (3) の選択肢 ⑩M ②2M ③m ④2m ⑤M+m⑥2(M+m) (1 (3) (2) から,おもりBの質量をじょじょに大きなものに変えていくと, 質量 2m[kg] のおもりCにすると動き出した。 あらい面と物体Aの あいだの静止摩擦係数μ を求めよ。 μ= 1① mg m+m B = T-W - f + T = 0 −1 = -~ T=mg mg m 29 T = g T= (4) の選択肢 ⑩M ②2m ③M+2m ④Mac ⑤ 2mac 6 (M+2m)ac 0 Mg 82mg 9 (M+2m)g = T と物体Aとの間の動摩擦係数μ′ を求めよ。 μ' = =T ma=-itw 2mg ima = -t+mg zmg ms 20 p= 2mg (4) (3) のあと, おもり Cは加速度ac [m/s2) で降下した。 あらい水平面 ⑧ ゲーゴ ⑥ 2ma mg FON 201 4 =Nxmg

解決済み 回答数: 1
英語 高校生

この空欄に共通語を入れないといけないんですけど分からないのでよろしければ全部じゃなくても良いので手伝っていただきたいです💦

(3) (a) We must keep an ( ) on the political situation. (b) She hit him hard and gave him a black ( ). (4) (a) This is going to cost you a good ( ) of money. (b) In this African town, there are many merchants who ) in diamonds. (5) (a) That politician always takes a strong () on difficult social issues (b) He was so shocked by the news that he could hardly ( ) up. (6) (a) Why are you sitting so far ( ) from us? Come over here and join us. (b) The two brothers look so much alike that it is difficult to tell them ( ). (c) The dog has pulled the newspaper ( ) again! (d) I don't like to mix business with pleasure, but try to keep the two things firmly ( ). (8) (a) In my ( ) you should try the exam again. (b) The ( uldn't got (7) (a) () all his campaigning, he couldn't get enough votes to win. (b) It might be better for us to make allowance ( ) his inexperience because he is a newcomer. (9) (a) You will be sure to like him, ( ) you talk with him. (b) He writes a letter ( ) in a while, but not so often. The earth goes around the sun ( ) a year of 251) (10) (a) A( ) from the mountain top was spectacular. ) is a place where you can get water. (b) The doctor said that he would be ( (11) (a) Will you ( 15 (c) He has knowledge and experience as ( ). ) if he took this medicine. ) after the children while I'm out? in the long run 結局は (b) ( ) in the mirror before you drive off

解決済み 回答数: 1