Microsoft powerpoint chapter19 compatibility mode author. Energy transformed work done applied force x distance. Worksheet work and power problems 1 international system of. If youre behind a web filter, please make sure that the domains. Work and energy physics problems basic introduction youtube. Work done is generally referred in relation to the force applied while. There are only two relevant variables in one dimension. Concepts of work, kinetic energy and potential energy are discussed. How much work is done on a 16 n sack of potatoes when you lift the sack 1. The last questions asks you determine the work done by friction, the average kinetic frictional force, and the.
In the past the fuel could, just possibly, have been coal. Create an unlimited supply of worksheets for practicing exponents and powers. Potential and kinetic energy often appear in the same problems. They are probably the first thing you learn in your physics class. The unit of work is the joule j work force x distance w f x d work joules j force newtons n distance meters m 1. Copyright 2012olathe public schoolsepostnotice of nondiscrimination.
Work and power problems worksheet by the skye world science. Please circle your final answer and be sure it has the proper label. Download work energy power problems with solutions. Determine the work done by lamar in deadlifting 300 kg to a height of 0. Energy, work and power energy if you own a car, it will not move without fuel. They apply a cumulative force of 1080 n to push the car 218 m to the nearest fuel station. This free worksheet contains 10 assignments each with 24 questions with answers. Work and power does the work required to lift a book to a high shelf depend on how fast you raise it. Free download of step by step solutions for class 10 physics chapter 2 work, energy and power of icse board concise selina publishers. How much work is required to move it at constant speed a 3m along the floor against a friction force of 4n, b 3m along a frictionless air table, c 3m vertically.
It will be convenient for analysis of power system if the voltage, power, current and impedance ratings of power system components are expressed with reference to a. A block of mass m is pulled over a distance d by an applied force f which is directed in parallel to the displacement. Be sure to show all calculation work in the space provided. Work and power worksheet answer each question by calculating for the missing variable. The first problem asks you to calculate the work req. This worksheet will prepare students to solve simple problems including work. Type of energy associated with the motion of an object. Calculate the work done by a 47 n force pushing a 0.
Work, energy and power are the most used terms in physics. Work, power and energy practice problems work and power problems 1 how much work will you do if you push a block of concrete 4. This oer repository is a collection of free resources provided by equella. A student who weighs 500 newtons climbed the stairs from the first floor to the third floor, 15 meters above, in 20 seconds.
Work and energy can be considered as two sides of the same coin. A 10 kg object experiences a horizontal force which causes it to accelerate at 5 ms 2, moving it a distance of 20 m, horizontally. Mixture word problems work word problems one step equations multi step equations exponents. Check your answer by multiplying the power you calculated by the time given in the problem. Question titlework problems v continued compare the work done by and external power exerted by the jogger in the intervals a to b and c to d. All answers must have work, significant fi gures and correct units. Bonus questio n write the answer below this question and circle it. The magnitude of the force is given by f ma 105 50 n.
Work, energy and power solutions for icse board class 10. Calculate the kinetic energy of a truck that has a mass of 2900 kg and is moving at 55 ms. The work done on the crate by the normal force is zero. A calculate the amount of work that ralph did on the car. The power is external because we are ignoring contributions form internal work such as maintaining body temperature acceleration due to gravity is 9. Power 100 watts or 100 joules per second john and peter have the same power. In the diagram below, the spring has a force constant of 5000 nm, the block has a mass of 6. Worksheet work and power problems 1 free download as word doc. The result should be the work given in the problem. Find the kinetic energy gained by the object at distance 12m. But whatever fuel you use, you are buying something with the. Refer to example problem 1 to solve the following problem.
Microsoft word worksheet work and power problemskey author. Work done by gravity is positive, by spring and friction is negative. He exerted a horizontal force of 20 newtons for four seconds. Work w is the energy transferred to or from an object by means of a force acting on the object. A 10 kg object experiences a horizontal force which causes it to accelerate at 5 ms2, moving it a distance of 20 m, horizontally. Power power is defined as the rate at which work is done. Students can solve simple expressions involving exponents, such as 3 3, 12 4, 5 0, or 8 2, or write multiplication expressions using an exponent. At present this fuel could be petrol, or alcohol or diesel fuel. Misfortune occurs and renatta and her friends find themselves getting a workout.
At maximum compression, the box has a speed of zero. If you still cannot do it without using the formula, click here to see the solution. Calculate the work done by a 47 n force pushing a pencil 0. Based on what you know about work, answer the following questions. If youre seeing this message, it means were having trouble loading external resources on our website.
It acts over a distance of 20 m, in the same direction as the displacement of the object, implying that the total work done by the force is given by w fx. Justify the number of significant digits in your answer. Amy uses 20n of force to push a lawn mower 10 meters. The frictional force against the forward motion of the bicycle equals 35 n. A 2kg object is being pushed by a horizontal force f along a horizontal frictionless airtable. Energy transferred to the object is positive work, and energy transferred from the object is negative work. In this article, we will learn all about the concept of work, power and energy. It is the product of the force applied to an object and the distance the object moves. Note that the mass of the crate is not required to answer the question. The components of various sections of power system may operate at different voltage and power levels. Determine the compression of the spring such that the block just makes it to the top of the hill. The worksheets can be made in html or pdf format both are easy to print.
323 117 1122 970 580 1027 1273 1021 1304 1030 230 1346 720 892 1030 1497 1167 604 259 1086 1048 1095 757 100 539 414 239 1144 592 610 687 668 127 1274 738 582 701 547 96 657 545