Power to Weight Ratio Calculator:
Enter the values of power output, P(W) and weight, W(kg) to determine the value of Power to Weight Ratio, PTW(W/kg).
Power to Weight Ratio Formula:
The Power to Weight Ratio (PTW) is an important metric used to evaluate the performance of vehicles, machines, or athletes. It is the ratio of the power output of a system to its weight. A higher power-to-weight ratio generally indicates a more powerful or faster system, as it means that more power is available per unit of weight.
In the context of vehicles, PTW is commonly used to compare different models, where a higher PTW indicates faster acceleration and better performance. In machines, it provides insights into how efficiently a system utilizes its power to overcome its weight. Similarly, in sports, PTW can represent an athlete’s ability to generate power relative to their body weight.
Power (P) is usually measured in watts (W), and weight (W) in kilograms (kg) or pounds (lbs). The power-to-weight ratio is a useful tool in various fields, including automotive design, sports science, and engineering.
Power to Weight Ratio, PTW(W/kg) in Watts per kilogram is calculated by dividing the power output, P(W) in Watts by weight, W(kg) in kilograms.
Power to Weight Ratio, PTW(W/kg) = P(W) / W(kg)
PTW(W/kg) = power to weight ratio in Watts per kilograms, W/kg.
P(W) = power in Watts, W.
W(kg) = weight in kilograms, kg.
Power to Weight Ratio Calculation:
- A car has a power output of 223710 W and weighs 1500 kg. Calculate its power-to-weight ratio.
Given: P(W) = 223710 W, W(kg) = 1500kg.
Power to Weight Ratio, PTW(W/kg) = P(W) / W(kg)
PTW(W/kg) = 223710 / 1500
PTW(W/kg) = 149.14W/kg.
- A motorbike has a power output of 89484 W and power to weight ratio of 447.42W/kg. Calculate the weight.
Given: P(W) = 89484 W, PTW(W/kg) = 447.42W/kg.
Power to Weight Ratio, PTW(W/kg) = P(W) / W(kg)
W(kg) = P(W) / PTW(W/kg)
W(kg) = 89484 / 447.42
W(kg) = 200kg.