Question

the work done by the force is defined as: A. the product of force and magnitude of the displacement B. the product of component of the force in the direction perpendicular to the displacement and the magnitude of the displacement C. the negative product of component of the force in the direction of the displacement and the magnitude of this displacement D. the product of the component of the force in the direction of the displacement and the magnitude of the displacement

Answer 1

Answer:

The answer is option A.

Explanation:

The formula of work done is force multiplied by displacement.

Answer 2

Answer:

the work done by the force is defined as: D. the product of the component of the force in the direction of the displacement and the magnitude of the displacement.

Explanation:

• Work done: If an object is displaced by applying a force on it, then we say work is done on the object.
• Suppose by applying a force F, an object has displaced by 's', horizontally.

       The horizontal component of the force will be = F cos$\theta$.

       Work done = (Force)(Displacement) = (F cos$\theta$)(s) = Fs cos$\theta$ = F.s

• Dot product indicates the work done is a scalar quantity, it has no direction.
• So work done is "the dot product of force and displacement" or "the product of the component of the force in the direction of the displacement and the magnitude of the displacement".

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