Supiyanto Kelas X Evaluasi Bab 3 Nomor 7

Kecepatan sudut antara jarum penunjuk jam, menit dan detik pada suatu jam dinding berturut-turut berbanding sebagai …

A. 1 : 6 : 12 D. 1 : 12 : 18
B. 1: 12 : 36 E. 1 : 12 : 360
C. 1 : 12 : 720

Penyelesaian

Perbandingan jarum:

Jam : menit : detik

\frac{1\text{ }\!\!~\!\!\text{ putaran}}{12\text{ }\!\!~\!\!\text{ jam}}:\frac{1\text{ }\!\!~\!\!\text{ putaran}}{60\text{ }\!\!~\!\!\text{ menit}}:\frac{1\text{ }\!\!~\!\!\text{ putaran}}{60\text{ }\!\!~\!\!\text{ detik}}

\frac{1}{12\times 60\times 60}:\frac{1}{60\times 60}:\frac{1}{60}

1 : 12 : 720

 

Jawaban C

Supiyanto. 2006. FISIKA UNTUK SMA KELAS X. Jakarta: Phiβeta.

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