mau tanya kak, maka besar T1 dan T2?
Jawaban:
66,65 N
Penjelasan:
Diektahui :
m2 = 10 kg
m1 = 5 kg
Ditanyakan :
T1 dan T2
Jawab :
mencari tegangan tali 1
F = ma
T1 - w1 = m1a1
T1 = w1 + m1a1
T1 = m1g + m1a1
T1 = m1 (g+a1)N
T1 = 5 (10+a1) N
mencari tegangan tali 2
F = ma
T2 - w2= m2a2
T2 = w2 + m2a2
T2 = m2g + m2a2
T2 = m2 (g+a2) N
T2 = 10 (10+a2) N
mencri percepatan
T1 =T2 dan a2 = -a1 karena berbeda arah
10(10+a2) = 5(10+a1)
10(10-a1) = 5(10+a1)
100 - 10a1= 50 + 5a1
100 - 50 = 10a1 + 5a1
50 = 15a1
a1 = 50/15
a1 = 3,33 m/s^2
mencari tegangan tali 1
T1 = 5(10+a1)
T1 = 5(10+3,33)
T1 = 5 x 13,33
T1 = 66,65 N
mencari tegangan tai 2
T2 = 10(10-3,333)
T2 = 10(6,67)
T2 = 66,7 N
