A body of mass 2kg is suspended from the ceiling of a lift with a light inextensible string. lf the lift moves upwards with acceleration of 2ms-2, calculate the magnitude of the tension in the string (g = 1Oms-2)
-
A.
24N -
B.
20N -
C.
16N -
D.
4N -
E.
0N
Correct Answer: Option C
Explanation
T + ma = mg
T = mg – ma = 2 x 10 – 2 x 2 = 16N