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How do you calculate the power of an electric motor?
By taking the voltage and multiplying it by the associated current, the power can be determined. A watt (W) is a unit of power defined as one Joule per second. For a DC source the calculation is simply the voltage times the current: W = V x A.
How do you know how much weight a motor can pull?
The formula that relates mass, force and acceleration is: F = m*a , where F is the force, m is the mass and a is the acceleration. So a = F/m would be 14.715 kg*m/s² divided by 2 kg and therefore: ~7.358 m/s².
What does motor pull mean?
: the maximum constant torque under which a motor will accelerate from rest to approximate normal speed.
How to calculate the power of an electric motor?
So to take your example of a 10kg weight, to lift this at a speed of 1 m/s would require a power: W = 10 × 9.81 × 1 = 98.1 W which is well within the power of your 750W motor. Alternatively you could flip this around and ask how fast you could lift the 10kg weight if you ran the motor at full power.
How to calculate motor power to lift 150 kg?
Power can be calculated when you know how fast and how far you need to lift the 150kg load. In other words you need to decide the speed at which you want to lift the load, and then you can calculate Power→ Force= Weight = Mass * Acceleration due to gravity.
How does the torque of an electric motor work?
The torque of the motor can be increased or decreased by running it through a gearbox, so in principle you could lift as big a weight as you want as long as you use a very low gear (and therefore lift the weight slowly). The rate of lifting is easier to be precise about. If you lift a mass through a height in a time the power required is:
How to calculate how much weight can DC motor carry?
One horsepower is equal to 746 W = 746 J/sec = 746 N-m/sec. Likewise, 1 N-m is equal to 0.7375621 ft-lb, so 1 hp = 746 N-m/sec = 550.3 ft-lb/sec. This means with 1 hp, you can lift about 550 lbs (250 kg) at a rate of 1 ft/sec, 1100 lbs at a rate of 0.5 ft/sec, 225 lb at a rate of 2 ft/sec, 1 lb at a rate of 550 ft/sec, and so on.