數學與統計 大學 1年以上以前 沒給角度要怎麼算啊? Force R is the resultant of two forces P and Q. If the magnitudes of R and Q are 15 N and 7.32 N, respectively, determine (a) the magnitude of P; (9.93 N or 17.25 N) (b) the projection of R onto the direction of P. (13.6 N) B P 0 a R 尚未解決 回答數: 0
數學與統計 大學 2年以上以前 這是物理題目，算功 有人可以解釋一下這個式子是甚麼意思嗎？ 尤其是下面那一行 J 0 object as the object moves in the x direction from the origin to x=5.00 m. Find the work W = JF. dr done by the force on the object. 第 29 題詳解: 5m P6.29 W = [ F ·dř = [ (4xî + 3yĵ)N · dxî W 5 m (4 0 - (4 N/m) (4 N/m)xdx + 0=(4N/m)- ASUS X O 5 m 50.0 J 23°C 多雲 尚未解決 回答數: 1
數學與統計 大學 5年以上以前 求解這題的向量r該怎麼寫 。 n COn818t1n選0f the bar 0OA, two identical 2/77 Replaee id asectl0on Of fin tape 1s subjected to the pulley 3 ) 180-N tensgile forces shown in the figure. Deter- which a mine fhe eduivalent force-couple system at polimnt 色 Problem 2/75 上 1 76 The device shown is a part 0f an automobile seat- back-release mechanism. The part is subjeeted to the 4N force exerted 反 A and a 300- N. mm Testor- 同說 人 語 待回答 回答數: 0
