JAMB - Physics (2009 - No. 7)
If a heavy barrel is rolled up a plane inclined at 30° to the horizontal. its velocity ratio will be?
3.0
3.1
3.2
2.0
Giải thích
V.R = \(\frac{1}{sinθ}\)
= \(\frac{1}{sin 30°}\)
= \(\frac{1}{0.5}\)
= 2
V.R = \(\frac{1}{sinθ}\)
= \(\frac{1}{sin 30°}\)
= \(\frac{1}{0.5}\)
= 2