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Work Practice Problems Worksheet #1 ANSWER KEY. 1) Amy uses 20N of force to push a lawn mower 10 meters. How much work does she do? Work = Force X Distance Work = 20N X 10m Work = 200 J. 2) How much work does an elephant do while moving a circus wagon 20 meters with a pulling force of 200N?
1. ___________________ is done when an object moves through a distance because of a ________________ acting upon the object. 2. When calculating work, you should use the formula: work = force X ____________________. 3. The SI unit for work is the _______________________. It is represented by the letter ______. C. Work Problems: 4.
Answer (a) Work done, $W=Fs\cos\theta$ where $F$ is the force applied, $s$ is the displacement and $\theta$ is the angle between force and displacement. This shows that work done is independent of time. According to our question, both forces are applied and the direction of movement of the box is the same.
Review the units of work, energy, force, and distance. Use the equations for mechanical energy and work to show what is work and what is not. Make it clear why holding something off the ground or carrying something over a level surface is not work in the scientific sense.
In science, work is defined as the force needed to move an object a certain distance. The amount of work done per unit of time is called power. Suppose you and a friend are helping a neighbor to reshingle the roof of his home.
1. A force of 120 N is used to lift a 10 kg box to a height of 5.0 m. (a) What work was done by the applied force? W = F ¢x = 120 £ 5 = 600 J. (b) What is the net force acting on the box?
Energy transformed = work done = applied force x distance. We write this equation as. WD = F x d. A crate of mass 50kg is pushed along a floor with a force of 20N for a distance of 5m. Calculate the work done. Solution: Use.
