Physics 163

Unit 2: Newton's Laws of Motion

Problem Set C

Problem #18:

A 7.78-kg object experiences a rightward acceleration of 4.45 m/s/s when a 51.2-Newton rightward force is applied to it. Determine the coefficient of friction between the surface and the object. Enter your answer accurate to the third decimal place

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• Read the problem carefully and diagram the physical situation (free-body diagram)
• Identify known and unknown information in an organized manner (list 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

The task of determining an individual force value if given mass and acceleration information is discussed in detail at The Physics Classroom.

The relationship between the coefficient of friction and force of friction is discussed in detail at The Physics Classroom.

The relationship between mass and the force of gravity is discussed in detail at The Physics Classroom.

The task of constructing a free-body diagram for a physical situation is discussed in detail at The Physics Classroom.

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