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4th Edition

Andrew Pytel And Jaan Kiusalaas

Publisher: CENGAGE L

ISBN: 9781305501607

Chapter 4, Problem 4.37P

Textbook Problem

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The 40-kg homogeneous disk is resting on an inclined friction surface. (a) Compute the magnitude of the horizontal force *P*. (b) Could the disk be in equilibrium if the inclined surface were frictionless?

To determine

**(a)**

Magnitude of horizontal force

**Concept used:**

Draw the FDB of disk as shown below.

For the system to be in static equilibrium the summation of all the moment about point

Here,

Take moment about point

Here,

**Calculation:**

From the FBD shown the distance between line of action of

Express the vertical distance between line of action of force

Substitute

To determine

**(c)**

Verify if disk in equilibrium if there is no friction.

International Edition---engineering Mechanics: Statics, 4th Edition

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