I have a problem of two parts which I don't know what formulas to use. I would be greatful if someone could help me with it:(adsbygoogle = window.adsbygoogle || []).push({});

A bucket with the mass M is hanging in a cord with the length of L which in turn goes over a pulley with a diameter of D. The pulley has a crank with the length x. The force which is used at the end of the crank is F. How long must x be to make it possible to pull the bucket all the way up, L, in T seconds?

_____

/ / Fp \ F

II 0= I========

I \___/

I D

L I

I

IIIIIIIII

I M I

IIIIIIIII

The second part of the problem is to identify the maximum and minimum force (Fp-max & Fp-min) on the stand (that is the axle in the middle of the pulley).

L,M,D,F,T are known and Fp-max and Fp-min are unknown.

What formulas should be used to solve this problem?

/Cheesy

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# Homework Help: Bucket and crank

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