A constant applied force F, of 15.0 N pushes a box with a mass m = 6.00 kg a distance x = 15.0 m across a level floor. Thecoefficient of kinetic friction between the box and the floor is 0.150.F,mAssuming that the box starts from rest, what is the final velocity vf of the box at the 15.0 m point?Uf =m/sIf there were no friction between the box and the floor, what applied force Fnew Would give the box the same final velocity?Fnew =N

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Answered: A constant applied force F, of 15.0 N…

A constant applied force F, of 15.0 N pushes a box with a mass m = 6.00 kg a distance x = 15.0 m across a level floor. The coefficient of kinetic friction between the box and the floor is 0.150.

University Physics Volume 1

18th Edition

ISBN:9781938168277

Author:William Moebs, Samuel J. Ling, Jeff Sanny

Publisher:William Moebs, Samuel J. Ling, Jeff Sanny

Chapter5: Newton's Law Of Motion

Section: Chapter Questions

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Concept explainers

Spring Potential Energy

The potential energy is the energy possessed by a body by virtue of its position or the energy held by the object due to its position relative to other objects, its force like stresses, charge, and other factors affecting the particles of the body. The potential energy is the measure of the net work done by or on the body. The spring potential energy is the potential energy stored due to the deformation of an elastic spring and this elasticity is due to the stretched spring. The elasticity is the ability of a solid-state matter to come back to its equilibrium position or original position after any kind of external force is acted on it. It is also known as Elastic potential energy. The potential energy here is caused due to the displacement of the spring from its equilibrium position to another position and this potential energy is equal to the net work done due to the stretching of the spring. It also resembles the same mechanics of the oscillation of a simple pendulum, where due to the external force, the object moves from its equilibrium position to its maximum ends and the periodic motion continues till it comes back to the equilibrium position to rest. 

Question

A constant applied force F, of 15.0 N pushes a box with a mass m = 6.00 kg a distance x = 15.0 m across a level floor. The
coefficient of kinetic friction between the box and the floor is 0.150.
F,
m
Assuming that the box starts from rest, what is the final velocity vf of the box at the 15.0 m point?
Uf =
m/s
If there were no friction between the box and the floor, what applied force Fnew Would give the box the same final velocity?
Fnew =
N

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