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Describe and apply the work–energy theorem; Describe and calculate work and power
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Calculating Work Work and energy have the same units. From the definition of work, we see that those units are force times distance. Thus, in SI units, work and energy are measured innewton-meters. A newton-meter is given the special namejoule(J), and1J=1N⋅m=1kg⋅m2/s2. One joule is not
Use the formula to calculate work done by force at an angle to the direction of motion. work done = 7cos60° × 10. = 35J. Gravitational Potential Energy. The gravitational potential energy of an object with mass at a height h above ground can be calculated by: = h.
Work - Definition • There are only two relevant variables in one dimension: the force, F x, and the displacement, Δx. Work W is the energy transferred to or from an object by means of a force acting on the object. Energy transferred to the object is positive work, and energy transferred from the object is negative work. W =F x
Teacher Toolkit. Topic: The Basics of Work, Energy, and Power. Objectives: To describe the conditions under which positive and negative work are done and to use the work equation to calculate the amount of work done.
Work Calculations. Lesson Notes. Learning Outcomes. • What is the equation for work? • How do you use the equation to calculate the work done on an object? The Work Equation: The work done (W) depends on three variables: 1. The amount of force (F). 2. The amount of displacement (d). 3. The angle between the force and displacement (Θ).
