Physics 163

Unit 2: Newton's Laws of Motion

Problem Set C

Overview:

Problem Set C targets your understanding of each of Newton's Laws. While the Multiple Choice question targets your conceptual understandings, the 20 problems target your ability to apply the concepts of force, mass and acceleration in order to analyze a variety of physical situations. Compared to Set B, the mathematical rigor of Set C is mild. There are at least six skills or conceptual understandings which you must have to be successful on Problem Set C. They include:

• an understanding of the distinction between mass and weight and the ability to determine one if given the other.
• an understanding that the acceleration of an object which is moving with a constant velocity is 0 m/s/s. Regardless of the actual velocity value, if it is constant, then there is an acceleration of 0 m/s/s.
• an ability to read a verbal description of a physical situation and to represent that situation in terms of the individual forces acting in the situation. This ability is most commonly referred to as the ability to construct a free-body diagram. An understanding of the various force types is essential to the task of drawing a free-body diagram.
• an ability to use Newton's second law equation and the concept of net force in order to read and interpret a word story problem and to determine the acceleration of an object from stated values of the individual forces.
• an ability to use Newton's second law equation and the concept of net force in order to read and interpret a word story problem and to determine the unknown value of an individual force if given mass and acceleration information.
• an understanding of the relationship between friction force and the coefficient of friction and the ability to use the equation Ffrict = mu • Fnorm to determine one value from the other.

View Sample Problem Set.

 Problem Description Audio Link MC The database creates a collection of T-F statements which vary significantly from student to student 1 A routine calculation involving the mass-weight relationship 2 A routine calculation involving the mass-weight relationship 3 A routine calculation which often becomes complicated by misunderstandings regarding the concept of mass 4 Use of a free-body diagram and individual force values to determine the acceleration of an object 5 Use of a free-body diagram and individual force values to determine the acceleration of an object 6 Determination of a vertical tension value when given mass and acceleration 7 Determination of a vertical acceleration when given the mass and tension force value 8 Determination of the vertical tension value if given the mass and the constant velocity value 9 Determination of a horizontal acceleration from the knowledge of individual force values 10 Determination of the applied force required to cause an object of known mass to have a stated acceleration in the presence of friction 11 Determination of a friction force value from mass and acceleration information 12 An extension of Problem 11; determination of the coefficient of friction 13 Determination of the coefficient of friction from mass, accleration and applied force information 14 Determination of the horizontal acceleration from the values of mass, applied force and the coefficient of friction 15 Determination of the vertical acceleration from the value of mass and air resistance 16 Determination of the vertical acceleration from the value of mass and air resistance 17 Determination of the horizontal acceleration from the values of weight, applied force and the coefficient of friction 18 Determination of the coefficient of friction from mass, accleration and applied force information 19 A blending of kinematics and Newton's second law to determine the acceleration of a skidding object 20 Determination of the applied force if given the mass, coefficient of friction and the constant velocity value

Audio Help for Problem: MC || 1 || 2 || 3 || 4 || 5 || 6 || 7 || 8 || 9 || 10 || 11 || 12 || 13 || 14 || 15 || 16 || 17 || 18 || 19 || 20

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