A mass of M kg is suspended by a weightless string. The horizontal force that is required to displace it until the string making an angle of \[45{}^\circ \] with the initial vertical direction is

A mass of M kg is suspended by a weightless string. The horizontal for

1.	A mass of M kg is suspended by a weightless string. The horizontal force that is required to displace it until the string making an angle of \[45{}^\circ \] with the initial vertical direction is
A.	\[Mg(\sqrt{2}-1)\]
B.	\[Mg(\sqrt{2}+1)\]
C.	\[Mg\sqrt{2}\]
D.	\[\frac{Mg}{\sqrt{2}}\]
Answer» B. \[Mg(\sqrt{2}+1)\]

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A mass of M kg is suspended by a weightless string. The horizontal force that is required to displace it until the string making an angle of \[45{}^\circ \] with the initial vertical direction is

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