Bola pejal massa 2kg (I = 2/5 MR2), diletakkan pd puncak bidang miring kasar dgn kemiringan 30°. pjng lintasan yg ditempuh smpai ke dasar bidang miring 14m, kecepatan bola sesaat pda bidang miring brpa? pakai cara tolong, blm mudeng soalnya..
4N03L
Sin 30 = h / s 0,5 = h / 14 h = 14 x 0,5 h = 7
v = akar [ (2 x g x h) / (k+1) ]; nilai k diambil dari nilai I = 2/5 MR2 v = akar [ (2 x 10 x 7) / (2/5 + 1) ] v = akar [ 140 / (7/5) ] v = akar [ 140 x 5 / 7 ] v = akar [ 700 / 7 ] v = akar [ 100 ] v = 10 m/s
0,5 = h / 14
h = 14 x 0,5
h = 7
v = akar [ (2 x g x h) / (k+1) ]; nilai k diambil dari nilai I = 2/5 MR2
v = akar [ (2 x 10 x 7) / (2/5 + 1) ]
v = akar [ 140 / (7/5) ]
v = akar [ 140 x 5 / 7 ]
v = akar [ 700 / 7 ]
v = akar [ 100 ]
v = 10 m/s