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A rope is being used to pull a mass of 10kg vertically up...

A rope is being used to pull a mass of 10kg vertically upward. Determine the tension in the rope if, starting from rest, the mass acquires a velocity of 4ms1 in 8s [g = 10ms2]

A.

5N

B.

50N

C.

95N

D.

105N

Correct answer is D

Tension = Force of gravity + acceleration force

= mg + ma

a=vut

= 408

= 0.5 ms2

Tension = 10×10+10×0.5

= 100 + 5

= 105N