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Two block of mass 2.9 kg and 1.9 kg are ...

Two block of mass `2.9 kg` and `1.9 kg` are suspended from a rigid support `S` by two inextensible wires each of length `1 m` , as shown in figure. The upper wire has negligible mass and the lower wires and support have an uniformly mass of `0.2 kg` .The whole system of blocks, wire and support have an upwards acceleration of `0.2 m//s^(2)`. Acceleration due to gravity is `9.8 m//s^(2)`.
(a) Find the tension at the mid point of the lower wire.
(b)Find the tension at the mid point of the upper wire.

A

tension at the mid-point of upper rope is 50 N.

B

tension at the mid-point of upper rope is 40 N.

C

tension at the mid-point of lower rope is 19.6 N.

D

tension at the mid-point of lower rope is 20 N.

Text Solution

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The correct Answer is:
A, D
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