## how many lbs of thrust is equal to 1 hp?

Im trying to find out how many hp a 50 lb thrust trolling motor is equal to

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### 2 Responses to “how many lbs of thrust is equal to 1 hp?”

1. mrjeffy321 says:

“Pounds of Thrust” is a measure of Force.
“Horse Power” is a measure of power.
They are two different units, you cannot convert them directly.

Power is calculated as energy per unit time (Joules / second).

A force applied over a distance will do work (ie. expend energy). If you knew the distance over which the constant force was applied, you could calculate the work done. By dividing this work by the time it took to preform it, you could calculate the power output.

A force will cause a mas to accelerate.
Force = mass * acceleration
If a constant force is applied to a mass, it will cause a constant acceleration.
If a mass is undergoing a constant acceleration with some known initial velocity (even zero), one could calculate the time it took for it to travel a given distance.
d = 1/2 at^2 + v*t
where d is the distance traveled, a is the acceleration, t is the time, and v is the initial velocity in that direction.

2. dreamwave says:

1 hp=746 kwatts
=746000 watts
=746000 kg m^2/s^3
= 2.20*746000 lbs m^2/s^3 ( 1 kg=2.20 pounds )
?? can’t transform like this!
if that is pound u need to know when the motor is loaded with 1 lb (ie 2.20 kg) what power is it delivering then u can find out how what load will deliver 1 hp
if 1 lb delivers x watts
1 lb delivers x/746 hp
1 hp is delivered by 746/x lbs
50 hp will be delivered by 50* 746/x lbs
and this is common sense the output power must depend on the load ,and this will depend on the motor not each motor in the world will deliver same power if loaded by equal weight