dane:
alfa(a) = 30*
f = 0,2
g = 9,81 m/s2
szukane:
a = ?
Fz = mg *sin(a)
T = mgf * cos(a)
Fw = Fz - T = mg*sin(a) - mgf *cos(a) = mg[sin(a) - f *cos(a)]
a = Fw/m = [mg(sin(a) - f*cos(a))]/m
a = g[sin(a) - f *cos(a)] = 9,81m/s2(0,5 - 0,2 * 0,866)
a = 3,2 m/s2
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dane:
alfa(a) = 30*
f = 0,2
g = 9,81 m/s2
szukane:
a = ?
Fz = mg *sin(a)
T = mgf * cos(a)
Fw = Fz - T = mg*sin(a) - mgf *cos(a) = mg[sin(a) - f *cos(a)]
a = Fw/m = [mg(sin(a) - f*cos(a))]/m
a = g[sin(a) - f *cos(a)] = 9,81m/s2(0,5 - 0,2 * 0,866)
a = 3,2 m/s2
===========