Odpowiedzi

2009-11-19T20:01:38+01:00
Dane
t= 1s
T=10 obr
r=10 cm
f=?
v=?
a(d)=?
obliczenia
v= (2πr)/T=(6.28 *10 cm)/ 10s-= 62.8 cm /10s=6.28cm/s
f=v/ 2πr= 6.28/ 62.8 =0.1 Hz
a= v²/r= (6.28)²/10=39.4/10= 3.94 cm/s²
2009-11-19T20:33:27+01:00
F=10
r=10cm=0,1m

T=?
V=?
a=?

f=1/T
T=1/f
T=1/10

V=2πr+*f
V=2*3,14*0,1*10
V=6,28 m/s

a=V²/R
a=6,28²/0,1
a=394,384m/s²