Question

Jawablah 2 pertanyaan berikut!!
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Answer 1

Verified answer

Gerak Melingkar
Kelas X

29.]
Rₐ = 25 cm = 0,25 m
Rb = 15 cm = 0,15 m
Rc = 40 cm = 0,4 m



= 2π rad /s

Sepusat ,
= 2π rad/s

• Rb
= 2π • 0,15
= 0,3π m/s

Terhubung ,
0,3π = ωₐ • Rₐ
0,3π = ωₐ • 0,25
ωₐ = 1,2π rad / s

Jadi ωₐ = 1,2π rad / s , = 2π rad/s [C]

30.]
Rₐ = 50 cm = 0,5 m
Rb = 20 cm = 0,2 m
Rc = 10 cm = 0,1 m
vₐ = 1 m/s

= _ ?

ωₐ = vₐ / Rₐ
ωₐ= 1 / 0,5
ωₐ = 2 rad / s

Sepusat , ωₐ =
• Rb
= 2 • 0,2
= 0,4 m / s

Terhubung ,


[D]