A person haviog a mass of 60kg exerts a horizontal force of 150N in horizontal floor with constant velocity, Net force is:
Correct answer: C. 150N
- A. 90N
- B. 60N
- C. 150N
- D. 100N
Explanation
The Correct Option is C as the person is moving with a net force of 150N in horizontal direction. Net force is defined as the force after all the forces acting on a body have been added. For example if a book is lying on a table, it is in rest because all the forces acting on the book after being added is zero so the net force on book is zero. But in the above mcq the forces acting on the person after being added are not zero and has horizontal direction. Thus Net force acting on the person is 150N in horizontal direction.
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Newton’s laws explain inertia, the relation between net force and acceleration, and action-reaction pairs. Questions involve free-body diagrams, balanced and unbalanced forces, F = ma, force as the rate of change of momentum, and identifying genuine third-law pairs, which act on different bodies.
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