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HUKUM NEWTON

1. Hk. I Newton Hk. kelembaman (inersia) : Untuk benda diam dan GLB F 0 Fx 0 dan Hk. II Newton a 0 GLBB

Fy 0

2.

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1 2 m1 m2 a 1 T m1 a

F ma

3.

Hukum III Newton F aksi = - F reaksi Aksi ­ reaksi tidak mungkin terjadi pada 1 benda Gaya gesek (fg) : * Gaya gesek statis (fs) diam fs = N.s * Gaya gesek kinetik (fk) bergerak fk = N. k Arah selalu berlawanan dengan gerak benda/sistem.

4.

N=w . Statika

N = w ­ F sin

N = w + Fsin

N = w cos

F 0 : 0

* *

Fx 0 Fy 0

---o0o---

Fx = resultan gaya sumbu x Fy = resultan gaya sumbu y F = resultan gaya

m = massa a = percepatan N = gaya normal s= koefisien gesek statis k= koefisien gesek kinetik W = gaya berat =sudut yang dibentuk gaya berat setelah diuraikan ke sumbu x atau y

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 ■Microsoft Word - File 03 = Hukum Newton new