Question

Which of the listed scenarios fits this free body diagram best?

A. A book is at rest on a tabletop.
B . An egg is free-falling from a nest in a tree. Neglect air resistance.
C. A rightward force is applied to a book in order to move it across a desk with a rightward acceleration. Consider frictional forces. Neglect air resistance
D.A rightward force is applied to a book in order to move it across a desk at constant velocity. Consider frictional forces. Neglect air resistance.

Answer 1

D. A rightward force is applied to a book in order to move it across a desk at constant velocity. Consider frictional forces. Neglect air resistance.

When an object moves at constant velocity, the net force acting on it is zero. In this scenario, a rightward force is applied to the book to counteract the leftward frictional force, resulting in a state of dynamic equilibrium. The force applied balances out the frictional force, allowing the book to move at a constant speed across the desk. This situation is represented by the free body diagram, where forces are balanced, and there is no acceleration.

The free body diagram that best fits the described scenario is when a rightward force is applied to a book to move it across a desk at constant velocity, considering frictional forces and neglecting air resistance.