Bantu yah nmr 3 Nya Please..........

F cos teta - f = m x a
vt^2 = vo^2 + 2as
2^2 = 0^2 +2(5)a
10a = 4
a = 4/10 = 0,4 m/s2

Fcos 30 - (ux m x g) = m xa
F 1/2 akar3 - (0,1×15×9,8) = 15 ×0,4
F1/2 akar3 - 14,7 = 6
F1/2 akar3 = 20,7
F = 20,7×2/akar3
F = 23,54 N