Question

Bantu dong please :) butuh cara dan rumus

Answer 1

Sigma Fx = m1a
T - Fges = m1a
T - miu(N) = m1a
T - 0.4(20) = 2a
T = 2a + 8.......(1)

Sigma Fy = m2a
W - T = m2a
10 - T = a
T = 10 - a.........(2)
Substitusi 1 ke 2
2a + 8 = 10 - a
a = 2/3 m/s^2
Dari soal diketahui
h = 2m
v0 = 0m/s
h = v0t + 1/2 at^2
2 = 0 + 1/2 (2/3)t^2
2 = 1/3 t^2
t^2 = 6
t = akar(6) s