f = 45/60s = 0,75Hz
r = 9cm
v = 2πrf
a = v²/r
a = (2πrf)²/r = 4π²r²f²/r = 4π²f²r
a = 4 x 3,14² x (0,75Hz)² x 0,09cm = 1,99m/s²
----------------------------------------------------------------------------------------------------
Litterarum radices amarae sunt, fructus iucundiores
Pozdrawiam :)
dane:
r = 9 cm = 0,09 m
n = 45
t = 1 min = 60 s
szukane:
v = ?
ar = ?
f = n/t = 45/60s = 0,75/s = 0,75 Hz
v = 2·3,14·0,09m·0,75/s = 0,42 m/s
v = 0,42 m/s
=========
ar = v²/r = (0,42m/s)²/0,09m = 1,96 m/s²
ar ≈ 2 m/s²
=======
" Life is not a problem to be solved but a reality to be experienced! "
© Copyright 2013 - 2025 KUDO.TIPS - All rights reserved.
f = 45/60s = 0,75Hz
r = 9cm
v = 2πrf
a = v²/r
a = (2πrf)²/r = 4π²r²f²/r = 4π²f²r
a = 4 x 3,14² x (0,75Hz)² x 0,09cm = 1,99m/s²
----------------------------------------------------------------------------------------------------
Litterarum radices amarae sunt, fructus iucundiores
Pozdrawiam :)
dane:
r = 9 cm = 0,09 m
n = 45
t = 1 min = 60 s
szukane:
v = ?
ar = ?
v = 2πrf
f = n/t = 45/60s = 0,75/s = 0,75 Hz
v = 2·3,14·0,09m·0,75/s = 0,42 m/s
v = 0,42 m/s
=========
ar = v²/r = (0,42m/s)²/0,09m = 1,96 m/s²
ar ≈ 2 m/s²
=======