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Work (W) is equal to the amount of energy transferred or converted by the force. Work is a scalar. S.I. unit is also the joule (J). where F is applied force, s is object's displacement while the force is applied and θ is angle between applied force and displacement.
WORK, ENERGY AND POWER. A dot B) is defined as A.B = A B cos θ. (6.1a) where θ is the angle between the two vectors as shown in Fig. 6.1(a). Since A, B and cos θ are scalars, the dot product of A and B is a scalar quantity. Each vector, A and B, has a direction but their scalar product does not have a direction.
Work W is the energy transferred to or from an object by means of a force acting on the object. Energy transferred to the object is positive work, and energy transferred from the object is negative work.
The Work–Energy Theorem begins to answer that question by stating that a system gains or loses kinetic energy by transferring it through work between the environment (forces being POWER
Work is energy transferred to an object or from an object as the result of the action of an external force. Positive work transfers energy to the object, and negative work transfers energy from the object. Work is the scalar product of the force vector and the displacement vector.
Energy is transferred from one form to another when: Work is done - for example, when an object is squashed, kinetic energy is con verted into elastic potential energy. Energy is emitted or absorbed in the form of electromagnetic radiation - for example, when thermal/internal energy of a radiator is transmitted by
2 Work, energy and power. The work done on an object by a constant force F is F ∆x cos Θ , where F is the magnitude of the force, ∆x the magnitude of the displacement and Θ the angle between the force and the displacement. W = F∆x cos θ. W = F ∆x cos θ. Work in Joule scalar. MAGNITUDE.
