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a = (0-4) / t = -4/t
Pf = Pi+Vi*y+(a*t^2)/2.
posicion final (Pf)
posicion inicial (Pi)
Pf = 6
Pi = 0 .
Vi = 4m/seg
a = -4/t.
6 = 0+4t+((-4/t)*t^2) / 2 .
6 = 4t-2t
t = 3
a = -4/t
a = -4/3m/s^2
m = p/g
m = 7458/9.8
m = 761 kg
Tension:
T = ma = 761kg(-4/3m/s^2)
T = -1014.69 kgm/s^2
T = 9944N
:3 copealo rapido que lo borran