Question 114: Centre of Mass and Rotational Motion

Question

A square Lamina OABC of length 10 cm is pivoted at ' $\mathrm{O}^{\prime}$. Forces act at Lamina as shown in figure. If Lamina remains stationary, then the magnitude of F is :

Accepted Answer

$$\begin{aligned}
&	ext { Since the lamina is equilibrium. }\
&	herefore \mathrm{F}_{	ext {net }}=0 \& 	au_{	ext {net }}=0
\end{aligned}$$
$\mathrm{T}_{\mathrm{o}}=10 \ell-\mathrm{F} \ell \Rightarrow \mathrm{F}=10 \mathrm{~N}$

Answer

10 N

Answer

0 (zero)

Answer

10$\sqrt2$ N

Answer

20 N

Centre of Mass and Rotational Motion

A square Lamina OABC of length 10 cm is pivoted at ' \mathrm{O}^{\prime}. Forces act at Lamina as shown in figure. If Lamina remains stationary, then the magnitude of F is :

Choose the correct answer: