Question

Un disco gira a 45 r.p.m. Calcular las velocidades lineal y angular de los puntos que distan 1 cm.del centro de giro.

Answer 1

Un disco gira a 45 r.p.m. Calcular las velocidades lineal y angular de los puntos que distan 1 cm.del centro de giro.

Explicacion

f = 45 rev/min(1min / 60 s) = 0.75 rev / s

r = 1 cm = 0.01 m

Vl = ?

T = ?

Formula

T = 1/f = 1/0.75 rev/s = 1.33 s/rev

w = 2 π / T = 2 π  / 1.33 s/rev  = 4.724 rad / s

Vl = w r = (4.724 rad / s)( 0.01 m) = 0-04724 m/s

Answer 2

Explicación:

f = 45 rev/min(1min / 60 s) = 0.75 rev / s

r = 1 cm = 0.01 m

Vl = ?

T = ?

Formula

T = 1/f = 1/0.75 rev/s = 1.33 s/rev

w = 2 π / T = 2 π  / 1.33 s/rev  = 4.724 rad / s

Vl = w r = (4.724 rad / s)( 0.01 m) = 0-04724 m/s