Hello,(adsbygoogle = window.adsbygoogle || []).push({});

I have one problem...

In what initial speed must barmen throw beer mug on the table so it can travel 2 meters. Mass of the beer mug is 0,3 kg. Sliding loss factor between table and beer mug is 0,3.

I hope you have understand the question, because I am translating it from my mother language and some of terms are new to me...

I have to solve this problem using energy conservation principle.

So kinetic energy is wasted on (abrasion, attrition, friction, rub, Sliding loss - which is the right term):

Ek=W

W is F*s

F is m*g*u

It now becomes:

1/2*m*v^2=m*g*u

This can't be right... Mass is relevant here but with this equation it is equation abridged...

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# Homework Help: Energy conservation

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