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Menu. LIST OF CONTENTS. Power – problems and solutions. Power is the rate at which work is done in a given period. Mathematically, power is the work/time ratio. P = W/t. Description: P = power (Joule/second = Watt), W = work (Joule), t = time interval (second)
Version 2 is now LIVE! We have more than tripled the number of problems, broken each unit into several smaller, single-topic problem sets, and utilized a random number generator to provide numerical information for each problem. Student answers are automatically evaluated and feedback is instant.
We have 20 ready-to-use problem sets on the topic of Work, Energy, and Power. These problem sets focus on the use of energy principles to mathematically analyze systems involving the motion of objects. Click a link to open a publicly-available problem set.
Follow along with common work and power example problems and solutions. See how to solve problems when force is applied directly parallel or at an angle.
Power and Work done, power formula, Calculate power using either energy or work done, examples and step by step solutions, GCSE / IGCSE Physics, notes.
A common physics lab involves quickly climbing a flight of stairs and using mass, height and time information to determine a student's personal power. Despite the diagonal motion along the staircase, it is often assumed that the horizontal motion is constant and all the force from the steps is used to elevate the student upward at a constant speed.
Let’s consider an example that can help illustrate the differences among work, force, and power. Suppose the woman in Figure 9.3 lifting the TV with a pulley gets the TV to the fourth floor in two minutes, and the man carrying the TV up the stairs takes five minutes to arrive at the same place.
