A 700-N man jumps out of a window into a fire net 10 m below. The net stretches 2 m before

bringing the man to rest and tossing him back into the air. The maximum potential energy of

the net, compared to its unstretched potential energy, is:

The maximum potential energy of the net, compared to its unstretched potential energy, is:    

Explanation:

From the question we are told that

   The  weight of the man is  

    The distance of the window to the net is  

    The distance stretched by net is  

Generally from the of conservation energy , the total energy is conserved

This implies that

Where is the initial potential energy of the , man which is mathematically evaluated as

Substituting values

And   is the unstretched potential energy of the net

 And   is the final potential energy of the man which is mathematically evaluated as

Substituting values  

The negative show that the direction of the man  is against the direction of gravitational pull

And     is  the maximum potential energy of the net when stretched

So the above equation becomes

So  

this is poiselle's equation from fluid mechanic in physics. mech eng

more than, less

less than, more