1.

A monkey climbs up and another monkey climbs down a rope hanging from a tree with same uniform acceleration separately. If the respective masses of monkeys are in the ratio 2:3, the common acceleration must be

Answer»

`(G)/(5)`
`6g`
`(g)/(2)`
`g`

Solution :Let T be the tension in the ROPE.
When MONKEY climbs up with acceleration a,
`T-m_1 g = m_1 a `
When another monkey climbs down with same acceleration a,
` m_2 g - Tm_2 a `
Adding (i) and (ii), we get
`(m_2-m_1 )g=(m_1 +m_2) a`
`or(1- (m_1)/(m_2)) g=[(m_1)/(m_2)+1] a or (1- (2)/(3)) g= [(2)/(3) +1]a`
` or 1/3g= (5)/(3)a ora= (g)/(5)`


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