Question

Ka bantu ini yaa soalnyaaa , mohon bantuannyaa​

Answer 1

b. fk = u . N

• N = wy = w cos a° = mg . cos 37° = 2,5 . 10 . 4/5 = 20 N

fk = u . N = 0,2 . 20 = 4 N

c.• Bola :

T1 - w1 = m1 . a

T1 - m1 . g = 1 . a

T1 - 1 . 10 = a

T1 - 10 = a

T1 = a + 10

• balok :

w sin a° - T2 - fk = m2 . a

m2 . g . sin 37° - T2 - 4 = 2,5 . a

2,5 . 10 . 3/5 - T2 - 4 = 2,5a

T2 = 15 - 2,5a - 4 = 11 - 2,5a

• T1 = T2

a + 10 = 11 - 2,5a

3,5a = 1

a = 1/3,5 m/s² = 2/7 m/s²

d. T1 = T2 = T

T = a + 10 = 2/7 + 10 = 72/7