what is the formula for calculating mechanical advantage?
238581
(b) The ideal mechanical advantage equals the length of the effort arm divided by the length of the resistance arm of a lever. In general, the IMA = the resistance force, Fr, divided by the effort force, Fe. IMA also equals the distance over which the effort is applied, de, divided by the distance the load travels, dr.
435421
The formula for the energy of motion is KE = . 5 × m × v2 where KE is kinetic energy in joules, m is mass in kilograms and v is velocity in meters per second.
411200
Pressure and force are related, and so you can calculate one if you know the other by using the physics equation, P = F/A. Because pressure is force divided by area, its meter-kilogram-second (MKS) units are newtons per square meter, or N/m2.
576787
μ k= (Fk / N ) = (F / w) or, μ k = mg / Mg , or, μ k = m / M . This means that the ratio m/M gives us a measure of μk. Procedure: The link below may be used for the coefficient of friction, although it says Newton's 2nd Law.
948435
For most purposes, you can use the formula F = μN to calculate friction, with N standing for the “normal” force and “μ” incorporating the characteristics of the surface.
142099
The formula for force says force is equal to mass (m) multiplied by acceleration (a). If you have any two of the three variables, you can solve for the third. Force is measured in Newtons (N), mass in kilograms (kg), and acceleration in meters per second squared ( m/s2 ).
1182875
a = f (net) / m, where a = acceleration, f (net) = the net force acting on the object, m = the mass of the object.
336426
['The efficiency of a device, such as a lamp, can be calculated:', 'efficiency = useful energy out ÷ total energy in (for a decimal efficiency)', 'or.', 'efficiency = (useful energy out ÷ total energy in) × 100 (for a percentage efficiency)']
373219
The mechanical advantage of a simple machine like the wheel and axle is computed as the ratio of the resistance to the effort. ... In this case a system or combination of wheels (often toothed, that is, gears) are used. As a wheel and axle is a type of lever, a system of wheels and axles is like a compound lever.
287988
Mechanical advantage is a measure of the force amplification achieved by using a tool, mechanical device or machine system. Ideally, the device preserves_________ the input power and simply trades off forces against movement to obtain a desired amplification in the output force.
538910
Force and Surface Area. When a force is applied perpendicular to a surface area, it exerts pressure on that surface equal to the ratio of F to A, where F is the force and A the surface area. Hence, the formula for pressure ( p ) is p = F / A.
397916
The ratio of output to input force magnitudes for any simple machine is called its mechanical advantage (MA). One of the simplest machines is the lever, which is a rigid bar pivoted at a fixed place called the fulcrum.
750245
The mechanical energy of an object is equal to the sum of the potential plus kinetic energies, i.e. E = PE + KE, and is a direct measure of the total energy available to an object as its speed and position changes from one point to another. mgh = 1/2 mv2.
1221544
In a class one lever the force of the effort (Fe) multiplied by the distance of the effort from the fulcrum (de) is equal to the force of the resistance (Fr) multiplied by the distance of the resistance from the fulcrum (dr). The effort and the resistance are on opposite sides of the fulcrum.
1384500
The expected values of mechanical PR according to GA and FHR can be obtained with the following formula: mechanical PR interval (ms) = 143.9 + 0.29 × GA (weeks) − 0.20 × FHR (bpm). The PR intervals were similar in male and female fetuses.
591196
Equals: 75.00 kilograms force meter/second (kgf m/s) in power. Converting horsepower - Metric to kilograms force meter/second value in the power units scale. TOGGLE : from kilograms force meter/second into horsepower - Metric in the other way around.
419888
As velocity ratio or ideal mechanical advantage is a simple ratio of two distances, it also does not have the unit. The friction is not involved in it. The efficiency of a simple machine is defined as the ratio of useful work done by a machine (output work) to the total work put into the machine (input work).