A elevator weight is 4000kg when …
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Sia ? 4 years, 5 months ago
F = ma
upward acceleration is 'a'
F is tension
m is elevetor weight
a = F/m
a = 48000 / 4000
a = 12m/s2
v2 − u2 = 2as
S is height
v = u tat
v = at, u = 4
v = 36m/s
v2 = 2as
S = 18m
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