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 4ms−1 in 8s [g = 10ms−2]
5N
50N
95N
105N
Correct answer is D
Tension = Force of gravity + acceleration force
= mg + ma
a=v−ut
= 4−08
= 0.5 ms−2
Tension = 10×10+10×0.5
= 100 + 5
= 105N