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GAYA

GAYA. USAHA dan ENERGI. Gaya. Gaya dilambangkan F satuan Newton. Arah Gaya dilambangkan anak panah. F Gaya arah ke kiri – (negatif). F Gaya arah ke kanan + ( positif ). F1 60 Newton. F2 40 Newton. Penjumlahan Gaya. 1. 2 Gaya bekerja berlawanan arah. Fr = jumlah gaya atau Gaya resultan

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GAYA

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  1. GAYA USAHA dan ENERGI

  2. Gaya Gaya dilambangkan F satuan Newton Arah Gaya dilambangkan anak panah F Gaya arah ke kiri – (negatif) F Gaya arah ke kanan + ( positif )

  3. F1 60 Newton F2 40 Newton Penjumlahan Gaya 1. 2 Gaya bekerja berlawanan arah Fr = jumlah gaya atau Gaya resultan Fr = F1 – F2 Fr = 60 newton – 40 newton Fr = 20 newton ( + ) arah kanan

  4. Gaya bekerja berlawanan arah F1 20 Newton F2 60 Newton Fr = F1- F2 Fr = 20 newton – 60 newton Fr = 40 newton - ( negatif arah kiri )

  5. Gaya bekerja berlawanan arah F1 50 Newton F2 50 Newton Fr = F1 – F2 Fr = 50 newton – 50 newton Fr = nol ( statis )

  6. F1 = 20 N F2 = 60 N Gaya bekerja bersama - sama satu arah Dua buah gaya bekerja bersama - sama satu arah Fr = F1 + F2 Fr = 20 N + 60 N Fr = 80 N + ( arah kanan )

  7. F1 = 20 N F2 = 60 N Gaya bekerja bersama sama satu arah Dua buah gaya bekerja bersama - sama satu arah Fr = F1 + F2 Fr = 20 N + 60 N Fr = 80 N - ( arah kiri )

  8. Besar kecilnya gaya ditentukan oleh : Massa benda ( m ) = satuan Kilo Gram Percepatan ( a ) = satuan m/s2 Percepatan grafitasi ( g ) = satuan m/s2 F = m x a W = m x g

  9. CONTOH SOAL • Massa benda 50 kg bergerak dengan percepatan • 0,5 m/s2 Besarnya gaya ( F ) =………… Diketahui : m = 50 Kg a = 0,5 m/s2 Ditanya F ( gaya ).... Jawab : F = m x a = 50 kg x 0,5 m/s2 F = 25 newton

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