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In the figure. (m2) (< m(1)) are joined ...

In the figure. `(m_2) (< m_(1))` are joined together by a pulley. When the mass `(m_(1))` is released from the height `h` above the floor, it strikes the floor with a speed .

A

`(a)sqrt(2gh((m_(1)-m_(2))/(m_(1)+m_(2))))`

B

`(b)sqrt(2gh)`

C

`(c)sqrt((2m_(2)gh)/(m_(1)+m_(2)))`

D

`(d)sqrt((2m_(1)gh)/(m_(1)-m_(2)))`

Text Solution

Verified by Experts

The correct Answer is:
A
`E_(i)=E_(f)`
`0=m_(2)gh-m_(1)gh +1/2(m_(1)+m_(2))v^(2)`
`:. v=sqrt(2gh((m_(1)-m_(2))/(m_(1) + m_(2))))`
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DC PANDEY ENGLISH-WORK, ENERGY & POWER-Level 2 Objective
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