v = 9 m/s
R = 11 m
w = 550 N
Dit
A. Berat semu
B. Jika berat semunya 0, v?
A.
m = w ÷ g = 550 ÷ 10 = 55 kg
F sentripetal ke bawah
w kebawah
N keatas
Sigma F = F sentripetal
w - N = m v^2/R
550 - N = 55 x 9 x 9 ÷ 11
550 - N = 405
N = 550 - 405 = 145 N
B. Supaya tanpa bobot, N =0
w - N = m x v x v ÷ R
550 - 0 = 55 x v x v ÷ 11
550 = 5 x v x v
v kuadrat = 550 ÷ 5 = 110
v = akar 110 = 10,49 m/s
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v = 9 m/s
R = 11 m
w = 550 N
Dit
A. Berat semu
B. Jika berat semunya 0, v?
A.
m = w ÷ g = 550 ÷ 10 = 55 kg
F sentripetal ke bawah
w kebawah
N keatas
Sigma F = F sentripetal
w - N = m v^2/R
550 - N = 55 x 9 x 9 ÷ 11
550 - N = 405
N = 550 - 405 = 145 N
B. Supaya tanpa bobot, N =0
w - N = m x v x v ÷ R
550 - 0 = 55 x v x v ÷ 11
550 = 5 x v x v
v kuadrat = 550 ÷ 5 = 110
v = akar 110 = 10,49 m/s