The formula calculating work output is F*D/T, where F is the force exerted, D is the distance and T is the time. The work output of a system is also described as its Power.Know More
In order for work to be done, force has to be applied in the direction of the motion. Using this, work is calculated as Force * Distance. For example, if a man pushes an object with a force of 200N across a distance of 3M, the work done is 200 N * 3 M = 600 Nm or 600 J.
The work output or Power refers to the rate at which work is done. Power is measured in watts. Power is also sometimes measured in horsepower, where one horsepower is equal to 750 watts. Work output can be calculated using the formula Work done/time. For instance, if an electric motor raises a 1000kg beam, 4 meters in 10 seconds, where g is equal to 9.8,m/s, then the power is calculated as:
Work done/time = Force*distance/time = (1000*9.8)*4 /10 = 3920 watts. The higher the power of a machine, the more quickly it will be able to achieve a specific task. For instance, in the example above, a machine with a power rating of 8000 watts or higher would be able to lift the beam across the same distance in half the time.Learn more about Motion & Mechanics
The work output of a machine divided by the work input is the efficiency of the machine. Efficiency is typically stated as a percentage and is calculated by dividing work output by input and then multiplying by 100.Full Answer >
A passing grade for undergraduate courses is typically a D- or higher, although some schools don't offer grades of D- and go directly from D to F, which is a failing grade. A passing grade for graduate school courses can vary by school but is commonly a C- or higher. The numeric percentage required to get a passing grade can vary by school.Full Answer >
The length of the pendulum is directly correlated to its period as per the pendulum equation: T = 2π√(L/g), where T is the period of the pendulum, L is its length, and g is the gravitational constant 9.8 m/s2. Regardless of the weight of the pendulum bob, otherwise known as the weight at the end of the string, the deciding factor of the period of the swing is length, as it is the only variable in the stated equation.Full Answer >
The equation for measuring apparent weight is F = mg + ma. F represents apparent weight in newtons, m is the mass of the object, g is the acceleration due to gravity (9.8 meters per second squared on Earth's surface) and a is the acceleration of the object.Full Answer >