- #1
cheesy
- 3
- 0
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:
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
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