a) Ascends with an acceleration of 2m/s5.
F=ma=R-mg
(75*2)=R-(75*2)
R=150+750 =900N
b) Descends at a constant velocity of 1.5m/s.
F=ma=mg-R
But a=0 since the velocity is constant.
Therefore, 75*0=75*2 – R
R=750N
c) Descends with an acceleration of 5.5m/s5.
75*5.5= 75*2 – R
R=750 - 183.5=565.5N
Moraa orina answered the question on April 9, 2018 at 01:25
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