For given systen {θ ₁} ....... ^o

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4-1.Newton's Laws of Motion

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For given systen ${\theta _1}$ ....... $^o$

A

$30$

B

$45$

C

$60$

D

${\tan ^{ - 1}}\left( {\frac{1}{2}} \right)$

Solution

$\frac{{{T_1}\sin {\theta _1}}}{{{T_1}\cos {\theta _1}}} $ =$ \frac{{mg}}{{mg}}$ $\therefore $

$\tan {\theta _1} = 1$or ${\theta _1} = 45^\circ $

Standard 11

Physics

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