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Physics problem revolutions?
a 10 cm balls roll down a 15m alley. a) how many rev does it makes? answer im rad and deg
1 Answer
Relevance
- 1 decade agoFavorite Answer
Well 10 cm = 0.1 m
if 0.1 m ----> 360° ---- 2 \pi rad
15 m -----> Xdeg -----> Yrad
Xdeg = (15 x 360 ) /0.1 = 54000°, 54000°.... 1 rev / 360° so, 54000°/360° = 150 rev
Y rad = (15 x 2 \pi ) / 0.1 = 300 \pi rad ..... 1 rev /2 \pi rad so 300 \pi /2 pi = 150 rev
Cheers!
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