Zad. 1 NA pustyni sahara lezy wielblad i spi, Oblicz z jaka predkowscia porusza sie wielblad ? R = 6373 t=24 godz.
Zad. 2 beben pralki auromatycznej o srednicy 60 cm wykonuje 1200 obrotow na minute. Oblicz szybkosc odwirowywania ?
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R = 6373 km = 6373000 m = 63,73 *10⁵ m ,
T = 24 h *3600 s = 86400 s= 8,64 *10⁴ s
V = ?
V = 2πR/T
V = 2 *3,14 * 63,73 *10⁵ m/8,64 *10⁴ s
V = 400,2 *10⁵ m/8,64 *10⁴ s
V = 46,3 *10 m/s = 463 m/s
lub
V = 2 *3,14 * 6373 km/ 86400 s
V ≈ 0,46 km/s
zad.2.
d = 60 cm
r = d/2
r = 30 cm = 0,3 m
n = 1200
t = 1 min = 60 s
V = ?
T = t/n
T = 60 s /1200
T = 0,05 s
V = 2π r /T
V = 2 *3,14 * 0,3 m /0,05 s
V = 37,69 m/s
zadanie 1
R = 6373km
t = 24h
v = 2πr/T
v = 2 x 3,14 x 6373km/24h = = 1667km/h
zadanie 2
d = 60cm
r = d/2
r = 60cm/2 = 30cm
f = 1200/60s = 20Hz
v = 2πrf
v = 2 x 3,14 x 0,3m x 20Hz = 37,68m/s
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