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how to find work formula. SI unit of work done by the frictional force is joules. The change in voltage is defined as the work done per unit charge so it can be in general calculated from the electric field by calculating the work done against the electric field.
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Solving these types of problems is relatively easy. In equation form work equals force times distance or W Fs. The work can be found using the formula.
Work done by a frictional force on an object is force exerted by friction multiplied by the displacement of the object in the direction of the frictional force.
When a force F acts on a body and causes a displacement through a distance in the direction of force then the work is said to be done and this work is equal to the product of force and distance moved. To calculate how much work a gas has done or has done to it against a constant external pressure we use a variation on the previous equation. To relate a linear force acting for a certain distance with the idea of rotational work you relate force to torque its angular equivalent and distance to angle. W Fd cos0.
