ilovepdf_merged (3)

55 เฉลยแบบทดสอบสัปดาห์ท่ี 3 1. จงแปลงหน่วยจาก 500 km/min ไปเป็นหน่วย m / s วธิ ีทา 500 km/min x 1000/60 m / s = 833.33 m / s 2. จงหาแรงในแนวแกน X และแนวแกน Y ของแรง 45 นิวตนั ท่ีทามุมกบั แกน Y = 65 องศา y Fx Fy F = 45 N x 65 x y วธิ ีทา เขียนสามเหลี่ยมมุมฉากโดยใหแ้ รง F = 45 นิวตนั เป็นดา้ นตรงขา้ มมุมฉาก Fy  cos65 a F Fy  cos 65 F Fy  Fcosθ  45cos 65  19.01 N Ans Fx  sin65 F Fx  F sin65 45sin 65   40.78 N Ans

56 บนั ทกึ หลงั การสอน ผลการใชแ้ ผนการสอน....................................................................................................................... ............................................................................................................................................................ ............................................................................................................................................................ ............................................................................................................................................................ ............................................................................................................................................................. ............................................................................................................................................................. ผลการเรียนของนกั เรียน...................................................................................................................... ............................................................................................................................................................. ............................................................................................................................................................. ............................................................................................................................................................. ............................................................................................................................................................. ............................................................................................................................................................ ผลการสอนของครู............................................................................................................................. ............................................................................................................................................................ ………………………………………………………………………………………………………. ……………………………………………………………………………………………………… ……………………………………………………………………………………………………… ………………………………………………………………………………………………………