Answer to Question #213725 in Mechanics | Relativity for BASHEER SUNUSI

Question #213725

An object of mass 2.0kg falls freely from a height 100meter into a muddy ground and comes to rest in the middle calculate the distance the body penetrate if the average retarding force is 20,000newton


1
Expert's answer
2021-07-05T08:41:26-0400

Find the initial potential energy:


Ei=mgh.E_i=mgh.

The work done by the body in the mud:


Wm=Fd.Ei=Wm, mgh=Fd, d=mghF=0.098 m.W_m=Fd.\\ E_i=W_m,\\\space\\ mgh=Fd, \\\space\\ d=\frac{mgh}{F}=0.098\text{ m}.


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