# Quick Answer: How To Calculate Horsepower Physics?

The equation to calculate horsepower is simple: Horsepower = Torque x RPM / 5,252.

## How do you calculate power in physics?

Power is equal to work divided by time. In this example, P = 9000 J /60 s = 150 W. You can also use our power calculator to find work – simply insert the values of power and time.

## What is horse power in physics?

Horsepower is the imperial (British) unit of power, now replaced by the watt – the new SI unit. One horsepower is the work done at the rate of 550 foot-pounds per second and it is equivalent to 745.7 watts.

## What is current formula?

The current formula is given as I = V/R. The SI unit of current is Ampere (Amp).

## What is power in physics and examples?

Power is the rate at which work is done. The SI unit for power is the watt (W), where 1 watt equals 1 joule/second (1 W=1 J/s). Because work is energy transfer, power is also the rate at which energy is expended. A 60-W light bulb, for example, expends 60 J of energy per second.

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## Is 1 HP equal to a horse?

Does one horsepower equal one horse? Not quite. It’s a common misconception that one horsepower is equal to the peak power production of a horse, which is capable of a maximum of around 14.9 horsepower. By comparison, a human being is capable of approximately five horsepower at peak power production.

## How many horsepower is a human?

When considering human-powered equipment, a healthy human can produce about 1.2 hp (0.89 kW) briefly (see orders of magnitude) and sustain about 0.1 hp (0.075 kW) indefinitely; trained athletes can manage up to about 2.5 hp (1.9 kW) briefly and 0.35 hp (0.26 kW) for a period of several hours.

## How horsepower is calculated?

The equation to calculate horsepower is simple: Horsepower = Torque x RPM / 5,252.

## What is watt formula?

The formula for calculating wattage is: W (joules per second) = V (joules per coulomb) x A (coulombs per second) where W is watts, V is volts, and A is amperes of current. In practical terms, wattage is the power produced or used per second. For example, a 60-watt light bulb uses 60 joules per second.

## What is resistivity formula?

Resistivity, commonly symbolized by the Greek letter rho, ρ, is quantitatively equal to the resistance R of a specimen such as a wire, multiplied by its cross-sectional area A, and divided by its length l; ρ = RA/l. The unit of resistance is the ohm.

## What is the formula for ampere?

Amps = Watts / Volts Examples: 4160 Watts / 208 Volts = 20 Amps.

## What is power equal to in physics?

In physics, power is the amount of energy transferred or converted per unit time. In the International System of Units, the unit of power is the watt, equal to one joule per second.