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A chain of mass m and length l lies on a...

A chain of mass `m` and length `l` lies on a horizontal table. The chain is allowed to slide down gently from the side of the table. Find the speed of the chain at the instant when last link of the chain slides from the table. Neglect friction everywhere.
(a) the force from thelicopter and
(b) the gravitational force on her
(c ) What are speed ot the kinetic energy and.
(d) the speed of the astronaut just before she reaches the helicopter?

Text Solution

Verified by Experts

Decrease in potential energy of chain
`=` increase in kinetic energy
.
`:. Mg'(l)/(2) =1/2mv^(2)`
or `v=sqrt(gl)`.
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