Abody of mass 400 kg is suspended at a lower end of a light vertical chain and is being pulled up vertically. initially the body is at rest and the pull on the chain is 6000 g (g is 9.8 m/s^2) the pull gets smaller uniformly at the rate of 360g n per each meter through which the body is raised. what is the velocity of the body when it has been raised 10m?

The velocity of the body will be "31.62 m/s".

Given:

Mass of body,

m = 400 kg

Pull on chain,

The net upward force will be:

→

     

     

or,

     

Now,

The net acceleration will be:

→

     

     

But,

"g" is acting downwards then,

→

         

         

By using,

→

         

               

           

               

Thus the above answer is right.

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Answerit increases at a steady rate;