College Physics

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



College Physics

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

Objects with masses m1 = 10.0 kg and m2 = 5.00 kg are connected by a light string that passes over a frictionless pulley as in Figure P4.64. If, when the system starts from rest, m2 falls 1.00 m in 1.20 s, determine the coefficient of kinetic friction between raj and the table.


To determine
The co-efficient of kinetic friction.


Given info: The masses are m1 = 10.00 kg and m2 = 5.0 kg. The mass m2 falls 1.00 m in 1.20 s.

From Newton’s equation of motion, the displacement is,


  • u is the initial velocity.
  • t is the time taken.

Substitute 0 m/s for u in the above expression and re-arrange to get a.


Substitute 1.00 m for s and 1.20 s for t in the above expression to get a.


The free body diagram is given below.

From the free body diagram,

N=m1g (I)

m2gT=m2a (II)

TFk=m1a (III)

  • m1 and m2 are the masses of blocks.
  • a is the acceleration.
  • g is the acceleration due to gravity.
  • T is the tension in the cable.
  • Fk is the kinetic friction force.

Add Equations (II) and (III).


On Re-arranging,


Substitute 10

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

American restaurant portions are stable and consistent; use them as a guide to choosing portion sizes. T F

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

How is temperature related to the density of air?

Fundamentals of Physical Geography

Differentiate between simple and conjugate proteins.

Chemistry for Today: General, Organic, and Biochemistry

In what way has biotechnology had an impact on agriculture in the United States?

Human Heredity: Principles and Issues (MindTap Course List)