If possible, a brief explanation would be EXTREMELY helpful how you got the answer.
You and your roommate need to move a refrigerator to a new location. You push against the refrigerator with a force of 350 N an angle of 20° above the long axis while your roommate pushes with a force of 450 N at an angle of 45° below the long axis, as shown in the diagram below. If the coefficient of friction for the wood floor is 0.45 and the refrigerator has a mass of 145 kg, will you and your roommate be able to move it?
Problem 2 A 60 kg skier is in a tuck moving straight down a 30° slope. Air resistance pushes backwards on the skier with a force of 10 N (applied opposite the direction of the skiers motion and parallel to the 30° slope). The coefficient of dynamic friction between the skis and the snow is 0.08. What is the resultant force acting on the skier? A. Draw a free body diagram showing the scenario. B. Identify all the forces acting on the skier. C. Identify which forces are known and unknown. D. Identify the information given in the problem and what you are being asked to solve for. E. Set up and solve the problem.
Problem 3 A 70 kg climber is supporting themselves in a chimney as shown below with frictional forces being exerted on their shoes and back (being a good climber they put 0 weight on the rope). The static coefficient of friction between their shoes and the wall is 0.8 and between their back and the wall is 0.6. Assume the walls are vertical. A. Draw an appropriate free body diagram for this scenario. B. Solve for the minimal normal force they must apply to keep from falling.
Submitted February 04, 2015 at 12:00PM by hugebuffguy69 http://ift.tt/16kLeLy HomeworkHelp
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