A point object of mass m is kept at (a, 0) al | vedclass

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Question

(c)

Given,

$m _1= m$ is kept at $( a , 0)$

Let is new mass $m_2$ which is kept at $(-3 a, 0)$

$x _{ cm }=0$

$y _{ cm }=0$

$x _{ cm }

Vedclass · Accepted Answer

$\frac{m}{3}$

Vedclass · Answer

(c)

Given,

$m _1= m$ is kept at $( a , 0)$

Let is new mass $m_2$ which is kept at $(-3 a, 0)$

$x _{ cm }=0$

$y _{ cm }=0$

$x _{ cm }=0=\frac{ m _1 x _1+ m _2 x _2}{ m _1+ m _2}$

$m _1 x _1+ m _2 x _2=0$

$m 	imes a + m _2 	imes(-3 a)=0$

$ma =3 m _2 a$

$m _2=\frac{ m }{3}$

A point object of mass $m$ is kept at $(a, 0)$ along $x$-axis. What mass should be kept at $(-3 a, 0)$, so that centre of mass lies at origin?

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