Calculating Belt Pull, Drum Torque, Motor Power & Speed

AI Thread Summary
The discussion focuses on calculating the belt pull, drum torque, motor power, and speed for a conveyor belt system. Key parameters include a belt center distance of 4.0m, a required speed of 18m/min, and a drum diameter of 300mm. The belt mass is 3.0kg/m, loaded with 32kg boxes, and the friction coefficient is estimated at 0.34. The user calculated a force of 186.78N, a speed of 19.1rpm, and a power requirement of 56 watts. Clarification is sought regarding the friction context and the absence of a diagram for better understanding.
propsboy
Messages
3
Reaction score
0

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
 
Physics news on Phys.org
Thanks if anyone could please help me with this?
 
A figure would probably help, so we can be clear as to what system you are interested in.
 
Hi sorry, unfortunately i don't have a figure of it, it is just a normal flat conveyor belt with drums at each end
 
propsboy said:
Belt centres are 4.0m
What does this mean?
propsboy said:
Belt friction is estimated at 0.34
Friction between the belt and what? Is it sliding along a flat horizontal surface between the drums?
 
Kindly see the attached pdf. My attempt to solve it, is in it. I'm wondering if my solution is right. My idea is this: At any point of time, the ball may be assumed to be at an incline which is at an angle of θ(kindly see both the pics in the pdf file). The value of θ will continuously change and so will the value of friction. I'm not able to figure out, why my solution is wrong, if it is wrong .
TL;DR Summary: I came across this question from a Sri Lankan A-level textbook. Question - An ice cube with a length of 10 cm is immersed in water at 0 °C. An observer observes the ice cube from the water, and it seems to be 7.75 cm long. If the refractive index of water is 4/3, find the height of the ice cube immersed in the water. I could not understand how the apparent height of the ice cube in the water depends on the height of the ice cube immersed in the water. Does anyone have an...
Back
Top