# Work Problems Quiz Essay

NAME: WORK PROBLEMS QUIZ PERIOD: DATE: SHOW YOUR WORK. Final answers should be encircled with appropriate units. 1 . Hans Full is pulling on a rope to drag his backpack to school across the ice. He pulls upwards and rightwards with a force of 22. 9 Newtons at an angle of 35 degrees above the horizontal to drag his backpack a horizontal distance of 129 meters to the right. Determine the work (in Joules) done upon the backpack. 2. Renatta Gass is out with her friends. Misfortune occurs and Renatta and her friends find themselves getting a workout.

They apply a cumulative force of 1080 N to push the car 218 m to the nearest fuel station. Determine the work done on the car. 3. Lamar Gant, U. S. powerlifting star, became the first man to deadlift five times his own body weight in 1985. Deadlifting involves raising a loaded barbell from the floor to a position above the head with outstretched arms. Determine the work done by Lamar in deadlifting 300 kg to a height of 0. 90 m above the ground. 4. Sheila has Just arrived at the airport and is dragging her suitcase to the luggage heck-in desk.

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She pulls on the strap with a force of 190 N at an angle of 350 to the horizontal to displace it 45 m to the desk. Determine the work done by Sheila on the suitcase. 5. While training for breeding season, a 380 gram male squirrel does 32 pushups in a minute, displacing its center of mass by a distance of 8. 5 cm for each pushup. Determine the total work done on the squirrel while moving upward (32 times). 6. Before beginning its initial descent, a roller coaster car is always pulled up the first hill to a high initial height.

Work is done on the car (usually by a chain) to achieve this to drag the 2000-kg car train to the top of the 60-meter high hill. In each case, the force applied to the car will be applied parallel to the hill. Her critical question is: which angle would require the most work? Analyze the data, determine the work done in each case, and answer this critical question. d= Angle Force Distance Work 0) 35 deg 112 N 105 m b. 45 deg 139N 84. 9 m a) B) c) d) Solve for the work done for each diagram given the following: ION 40m

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