Calculating Belt Pull, Drum Torque, Motor Power & Speed

[propsboy]

Homework Statement

Calculate the Belt pull, drum torque, motor power and speed required to drive a flat top belt given the following information: Belt centres are 4.0m Required speed is 18m/min Drum diameter is 300mm Belt mass is 3.0kg/m Belt is fully loaded with 32kg boxes 0.8m long Belt friction is estimated at 0.34

Homework Equations

F=mgu
t=rF
N=2pi/60 N T

The Attempt at a Solution

I got an
F= 186.78n
N = 19.1rpm
P = 56 watts

 

[propsboy]

Thanks if anyone could please help me with this?

 

[Dr.D]

A figure would probably help, so we can be clear as to what system you are interested in.

 

[propsboy]

Hi sorry, unfortunately i don't have a figure of it, it is just a normal flat conveyor belt with drums at each end

 

[haruspex]

Belt centres are 4.0m

What does this mean?

Belt friction is estimated at 0.34

Friction between the belt and what? Is it sliding along a flat horizontal surface between the drums?