Jawab no 17 Materi gerak melingkar

KINEMATIKA
• Gerak Melingkar

GMB
m = 200 gr = 0,2 kg
R = 50 cm = ½ m
n = 150 put .... putaran lho, bukan putri
t = 1 menit = 60 s
T = __?
as = __?
F = __?

a][ periode = waktu untuk menempuh 1 putaran
T = t / n
T = 60 / 150
T = 0,4 s ✓

b][ percepatan sentripetal
as = ω² R = 4π² R / T²
as = 4π² • ½ / 0,4²
as = 12,5 π² m/s² ✓

c][ gaya tegangan tali = gaya sentripetal
F = m as
F = 0,2 • 12,5π²
F = 2,5 π² N ✓