Page 13 - Bimbingan Revisi Produk E-modul 5 benar
P. 13
2. Sebuah kereta mainan ditarik oleh seorang anak kecil menggunakan tali sehingga
o
membentuk sudut 30 , dengan gaya sebesar 10 N. Jika kereta mainan tersebut bergerak
sejauh 10 m, berapakah usaha yang telah dilakukan oleh anak kecil tersebut
Penyelesaian:
Diketahui:
o
: 30 , : 5 , Cos: 30
Ditanya: ?
= F Cos θ s
= (10 )(0,87) (10)
= 261
Menyimpulkan
Kesimpulan
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