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One end of rope is fixed to a vertical wall and other end is pulled by a horizontal force of 20N. The shape of flexible rope is shown in fig. The angle made by tangent at A (fixed point of rope) with downward vertical is $30^{0}$

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Mass of the rope is nearly 3.5 kg

The mass of rope is nearly 1.5kg

Tension in the string at A is 40 N

Tension in the rope is 20N at fixed point A

answer is A, B.

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Detailed Solution

$\begin{array}{l} T \sin 30 = 20 N - - - - - - - (1) \\ \Rightarrow T = \frac{20}{\sin 30^{0}} = 40 N \\ T \cos 30 = m g - - - - - - - - (2) \\ \Rightarrow m = 2 \sqrt{3} = 3.46 k g \end{array}$

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