Calculate the power of a the lift motor
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Doc Hudson
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Hello itouch, as Ali says can you think of any relevant formula, obviously this power calculation is nothing to do with volts x current. You probably need to be thinking about work done and how long it takes to do the work. You should have covered something similar in your course work.
Doc H.
Doc H.
GeoffreyBubbles
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this is how I would do it; Could be wrong and often I am!!!
Power = Energy/Time.
Energy(J)= Load x 9.81 x Vertical Distance.
So: 400 x 9.81 x 50 = 196200 joules, There for 196200/24 = 8175 Watts
BTW (9.81 is for Working out Joules)
Power = Energy/Time.
Energy(J)= Load x 9.81 x Vertical Distance.
So: 400 x 9.81 x 50 = 196200 joules, There for 196200/24 = 8175 Watts
BTW (9.81 is for Working out Joules)
pulley arrangement?
double the pulleys = half the effort + double the time.
double the pulleys = half the effort + double the time.
satyabysani
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you need to add the lift weight and frictional force in order to calculate the power for lift motor
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It is a lot harder to get a static load to start moving than it is to keep a moving load in motion....isn't it?
Weight is 882Lbs
Height is 164.04 feet
Time is 24 seconds
One horsepower is 33,000 ft/lb in a minute
One minute is 60 seconds. 60/24 = 2.5
So, 882lbs x 164.04 feet x 2.5 = 361708.2
All divided by 33000 = 10.960 hp required
[so much for "modern" mumbo jumbo metric rubbish.....]
[plus an allowance for frictional losses and accellerating the load]
john...
Height is 164.04 feet
Time is 24 seconds
One horsepower is 33,000 ft/lb in a minute
One minute is 60 seconds. 60/24 = 2.5
So, 882lbs x 164.04 feet x 2.5 = 361708.2
All divided by 33000 = 10.960 hp required
[so much for "modern" mumbo jumbo metric rubbish.....]
[plus an allowance for frictional losses and accellerating the load]
john...
Sharpend
"It Just Is"
I'm impressed four years after asking the question it's answered!!!!
Well done john
Well done john
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Ha ha!! Did not notice the thread was that old!!
john...
john...
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Can you imgine how peed off the brickies will be?
4 years to get a barrow load of bricks, gobbo has prbably gone off as well!!
4 years to get a barrow load of bricks, gobbo has prbably gone off as well!!
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