Tolong dong no 1-8 lengkap dengan uraiannya
Jawaban Terkonfirmasi
Nomor 1
NB = 15000*1,5/2 = 11250 N
Nomor 2
Idem nomor 1
Nomor 3
F – f = ma (Transalasi)
f = 1/2ma (Rotasi)
F =1,5 ma
120 = 1,5*8a
a = 10 m/s2
Nomor 5
Ek = EkR + EkT
Ek = 1/2mv² + 1/2*I*ω²
==>I = 2/5mr²
==>ω=v/r
Ek =1/2*2*40² +1/2*2/5*2*40²
Ek = 1600 + 640
Ek = 2240 J
Nomor 5
v = √(2g(h1-h2)/(k+1)
==> Silinder pejal k = 1/2
v= √(2*10*(50-20)/3/2
v= √400
v= 20 m/s
Nomor 6
T = (120*3 + 100*1,5)/3 sin 45
T = (360 + 150)/(3*1/2√2)
T = 510/(3/2*√2) = 170√2 N
Nomor 7
Nomor 8
μs = 1/2tanα = 1/2tan37 = 1/2*3/4 = 4/6 = 2/3