水平方向の計算、特に赤線を引いた部分がどうしてこんな計算になるのかわかりません。

書斜 を 行 を が を カ な は 7) 9) 3, 30% 例題2 図 1.18 (a) のように, 水平面から3 方向に綱でそりを引いた. そりと地面の間の静止 摩擦係数を0.25, そりと乗客の質量の和を60kg とすると、そりが動き始める直前の胸の張力 F CUKU の大きさは何kgw か. 解そりと乗客に作用する外力は,引き手の力 max F, 重力 W, 垂直抗力 N, 最大摩擦力Fma (Fmax=μN)である. 外力がつり合う条件から [図1.18 (b)] W=N 鉛直方向:W = N+Fsin30°=N+/1/2F 水平方向 : Fcos 30° (a) (b) :. N = W-F 2 Fmax F = CASTL N √3 F = Fmax = µN 2 0.5W √3+0.25 = 0.25×60kgw W =0.25w 25 (W-1/2F) 図 1.18 0.5W 1.73 +0.25 15kgw F イ 30° Fcos 30° = F'sin 30° √3F 2 N F Fmax F W

（２）の問題で0.249 mになったのですが、有効数字は配慮した方がいいですよね？答えは配慮してなくて、よく分からないので教えてください！！

40N 492 ② 自然の長さ0.200m のばねに,40Nの力を加えて伸ばすと, 長さが0.240mに った。重力加速度の大きさを9.8m/s2として,次の各問に答えよ。 (1) ばねのばね定数を求めよ。 (2) ばねに質量 5.0kgの物体をつるすと, ばねの長さはいくらになるか。 →0.249m

答え合わせをしたいのでよろしくお願いします！

7 重さ(重力の大きさ) 20Nの小球に2本 の軽い糸 1, 2 をつけ、糸の他端を天 井に固定して小球を静止させた。 糸 1, 2が鉛直方向となす角がそれぞれ 30° が引く力の大き WON! 7/7人 1/20 60°であったとき, 糸 さ T2 [N] を求めよ。 糸 130° haorg 1 糸2 130 √√3 20人 60° TIM と 2が引く力の大き T」[N] 10N 全合

答え合わせをしたです！よろしくお願いします！！

「力のつりあい 軽い糸に重さ(重力の大きさ) 10Nの小 球をつけ、天井からつるす。 小球を水平 方向に力下で引き, 糸が天井と30°の角 をなす状態で静止させた。 t=20人って (1) 糸が小球を引く力の大きさ T[N] を求めよ。 (2) 力の大きさ F [N] を求めよ。 30° F:/7N 糸 2 300 imine ↓ |0N|

解説お願いします！

2. 力の分解図に示した力のx成分, y成分を求めよ。 (1) (2) 糸 T2(N)] y 8 (T₁ (N) X 0 mg [N]

回答がこうなりません！！解説お願いします！

(7) 水平方向の力 50 N 60% X= 2SN y=-43N 43

全部教えて欲しいです

Ms.Sarim: Most of them want more time to study. They enjoy their lessons. And they know that their lessons are very important. I know that there was a long war in your country. Yes. So many people were either killed or "injured. I've also heard about the landmines. People still get injured, don't they? Taku: Ms. Sarim: Ava: Ms.Sarim: Unfortunately, that is true. Actually, some of my students are victims of those landmines. Taku Ken: Ms.Sarim: That's terrible. What are some of their dreams? First, 1 graduating from school, and second, getting a job. Koji: Graduating? Ms.Sarim: Yes. In Cambodia, finishing school is not so easy for some students. They need to "earn money. They don't have enough time to study. Yuka: Oh, I didn't know that. Ms.Sarim: But my students always try hard. They want to do something to help other people. Many of them want to be teachers or doctors. Koji: That's great. divide ~を分ける well: 井戸 bucket : パケツ injure: ~に怪我をさせる graduate: 卒業する earn:かせぐ 1 下線部アを具体的に日本語で説明しなさい (15文字以内)。 2 下線部イを本文中にある別の表現で書きなさい。 3 ①~⑤ が本文の内容と合っていればO、違う時には×を書きなさい。 (ただし、全部同じ記号にはなりません。 全部同じにした場合は無得点とします。) All children in Cambodia go to school after helping their families. 2 Most students in Cambodia like working better than studying at school. 3 Some of Ms. Sarim's students were injured by landmines. 4 Some students in Cambodia can't study enough because they have to work. 5 Teachers and doctors are popular jobs because they can help other people. -7-

全部答え教えてください

それぞれの文を指示に従って書きかえなさい。 1 It's raining (文末に「昨夜から」 を加えて) 2 Darwin found this frog in 1834. (This frog から始めて同じ事実を伝える文に) 思考・判断・表現 [2点x2] ある音楽雑誌にユキが投稿した原稿です。 よく読んであとの問いに答えなさい。 [10点] I really like the song "Hana wa Saku". The title means "Flowers will bloom." The song was written after the Great East Japan Earthquake in 2011. Many people have been listening to it since then. It has also been sung in several languages around the world. The melody and lyrics are soft and sweet, but they really touch our hearts. I think the song is a powerful message from the victims to the survivors and people living now. It reminds us of our families and friends. One day, I had an argument with my best friend about a small issue. After that, we did not talk to each other for more than one week. I wanted to say "I'm sorry," but I couldn't. I felt down every day. Then I heard this song. [ ] The next morning, I went to her. When she looked back at me, I smiled. I said nothing, but she also smiled at me. We became friends again. If you have never heard this song, please listen to it. You will remember something very important in your life. 1 本文の内容に合うように､( )に適する一語を書きなさい。 (1) Hana wa Saku" has been sung for about ( ) years. (2) ) the melody and lyrics are soft and sweet, they really touch our hearts. 2 話の流れを考え、[ ]に入れるに適するものを①~④から選んで記号を書きなさい。 I realized that I needed her friendship. 2 I wanted to make new friends. 3 The song encouraged the people living in the Tohoku Area. *area: 4 I didn't know much about the earthquake.

日清戦争で台湾が植民地となったりや朝鮮が独立したことで日本の綿糸の産業はどうして生産量が増えたのでしょうか？

徒然草 ｢丹波に出雲といふ所にあり｣ 3.4.5を教えてください🙏🙏🙏

3」「具しもて行きたる」(26 3)の主語は誰か。 聖海上人 アしだの何がし イ ウ そのほか H < 4 「他に異なりけり」(28)は、何がか。 5「据ゑ直して」 (26) とは、具体的にどのようにすることか。 潔に説明しよう。 [