To calculate the work and power we must know about the time, velocity, energy or force
Power is work over time
P = Wt
Where P is power, W is work and t is time
And W = Fd x cos(theta)
Here F is force and d is the distance
And d = velocity x time
If we replace d with velocity and time, it shows that to calculate Work we must know time, velocity, energy or force
And if we replace the formula to calculate work in P=Wt, it also shows that to calculate power we must know the time, velocity, energy or force.
There are several types of work. Let’s talk about mechanical work: W = F*d So you need to know the force and the distance. There are several ways to calculate the power. First: P=W/t So you can calculate it like that if you have already calculated the work. Remember W is F*d, so: P=F*d/t Remember d/t is also velocity: P=F*v So you can also calculate the power if you know the force and the velocity, with no need to know the work or the distance. So in both cases we have a formula that requires to know the force
All credit goes to wolf93.
