College Physics

11th Edition
Raymond A. Serway + 1 other
ISBN: 9781305952300



College Physics

11th Edition
Raymond A. Serway + 1 other
ISBN: 9781305952300
Textbook Problem

A block of mass 55.0 kg rests on a slope having an angle of elevation of 25.0°. If pushing downhill on the block with a force just exceeding 187 N and parallel to the slope is sufficient to cause the block to start moving, find the coefficient of static friction.

To determine
The co-efficient of static friction.


Given Info: Mass of the block is 55.0 kg. Angle of inclination is 25° . Applied force is 187 N.

The free body diagram is given below.

From the above diagram,

Fsmgsinθ=F                             (I)

N=mgcosθ                                    (II)

  • m is the mass of the student.
  • g is the acceleration due to gravity.
  • θ is the angle of inclination.
  • Fs is the static friction force.
  • F is the applied force.
  • N is the normal force.

Formula for static friction force is,

Fs=μsN                                           (III)

  • μs is the co-efficient of static friction.

Using Equations (I), (II) and (III), we get the expression for the co-efficient of static friction as,


Substitute 187 N for F, 55

Still sussing out bartleby?

Check out a sample textbook solution.

See a sample solution

The Solution to Your Study Problems

Bartleby provides explanations to thousands of textbook problems written by our experts, many with advanced degrees!

Get Started

Additional Science Solutions

Find more solutions based on key concepts

Show solutions add

The dietary monosaccharides include. sucrose, glucose, and lactose fructose, glucose, and galactose galactose, ...

Nutrition: Concepts and Controversies - Standalone book (MindTap Course List)

What is motion?

An Introduction to Physical Science

Where would you go on Earth to have a celestial pole at your zenith?

Horizons: Exploring the Universe (MindTap Course List)

Where in a prokaryotic cell is DNA found? How is that DNA organized?

Biology: The Dynamic Science (MindTap Course List)

Why does nuclear fusion require high temperatures and high densities?

Foundations of Astronomy (MindTap Course List)

A heat engine takes in 360 J of energy from a hot reservoir and performs 25.0 J of work in each cycle. Find (a)...

Physics for Scientists and Engineers, Technology Update (No access codes included)

Why is the fact that ice floats important to Earths generally moderate climate?

Oceanography: An Invitation To Marine Science, Loose-leaf Versin