How many hp or horsepower does it take to lift a 100kg up 30.0m in 20sec?
(1hp = 748W)
answered ... see Y!
P = F*d/t = Mg*d/t = 980 * 30/20 = 1470 J/s = 1470 Watts.
1470w./(746w/hp) = 1.97 hp.
To calculate the horsepower required to lift an object, we need to determine the work done and the time taken.
First, let's calculate the work done using the formula:
Work = force × distance
In this case, the force required to lift the object is equal to its weight, which can be calculated as:
Force = mass × acceleration due to gravity
Force = 100 kg × 9.8 m/s^2 (acceleration due to gravity) = 980 N
Next, we calculate the work done:
Work = 980 N × 30.0 m = 29,400 J (joules)
Now, let's calculate the power (in watts) used to do this work:
Power = Work / time
Power = 29,400 J / 20 s = 1,470 W (watts)
Finally, let's convert this power from watts to horsepower.
1 horsepower (hp) is equal to 748 watts, so:
Power in horsepower = Power in watts / 748
Power in horsepower = 1,470 W / 748 = 1.964 hp (approximately)
Therefore, it would take approximately 1.964 hp to lift a 100 kg object up 30.0 m in 20 seconds.