Work = Force x Distance

Understanding Work

Work is a measure of the energy transfer when a force moves an object.
Calculating work involves two key factors: the force applied to an object and the distance the object is moved.
To calculate work done, the formula is Work = Force x Distance.
Force is measured in newtons (N) and distance in metres (m), hence work is measured in joules (J).
However, it’s important to remember that work is only done when the force causes displacement.

Force and Movement

For work to be done and energy transferred, the applied force should move the object in the direction of the force.
If the object doesn’t move or if it moves perpendicular to the direction of the force, no work is done.
In some situations, the force and displacement are not in the same direction, such as lifting an object at an angle. In these cases, the component of force that acts in the direction of displacement is considered for calculating work.
Work done against the force of gravity is a crucial concept. When an object is lifted against the force of gravity, the work done equals the force of gravity (weight of the object) times the height raised.

Energy Transfer

When work is done, energy transfer occurs from one form to another. For instance, potential energy can be converted into kinetic energy.
Energy transferred can equally be calculated using the formula Energy transferred = Work done.
Energy conservation is a fundamental principle in physics. The total energy before work is done is equal to the total energy after, highlighting energy merely changes form and is not lost.

Remember to apply these principles and use the relevant formula to correctly calculate work done and energy transferred in different physical systems.