Physics 163

Unit 3: Motion in Two-Dimensions

Problem Set E

Problem 20:

Use the diagram below to assist in your problem solving. A 27.2-kg object is placed upon an inclined plane which has an incline angle (theta) of 55.8 degrees (theta). The coefficient of friction between the surface and the object is 0.189. Determine the acceleration (in m/s/s) of the object.

• Read the problem carefully and diagram the physical situation (free-body diagram)
• Identify known and unknown information in an organized manner (write on diagram)
• Take the time to plot out a strategy prior to beginning the solution
• Identify an appropriate formula to use
• Perform step-by-step algebraic manipulations

A discussion of basic principles related to Set E and to inclined plane problems is provided on the Set E Overview page.

Detailed information and examples of inclined plane problems are available online at The Physics Classroom.

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