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ID: 1559242 • Letter: T
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ter 5 (work) O D wwwwebassign.net/web/student/Assignment Responses submit dep 15472249 Notes o Ask Your leac points oscolPhyst 7 PO01 tutorial WA As shown in the figure below. a box of mass m 69.0 kg (initially at rest) is pushed a distance d o m across a rough warehouse floor by an applied force of FA 214 N directed at an angle of 30 below the horizontal. The coefficient of kinetic friction between the floor and the box is 0. 100. Determine the following. (For parts (a) through (d), give your answer to the nearest multiple of 10.) (a) work done by the applied force the force br gravity (b) work done (c) work done by the normal force (d) work done by the force of Triction (e) calculate the net work on the box by finding the sum of all the works done by each individual force. (f) Now find the net work by first finding the net force on the box, then finding the work done by this net force.Explanation / Answer
Work done by applied force=214cos30*79=14641 Nm
work done by gravity=F.S=0Nm
Work done by normal force=N.S=0 Nm
Work done by friction=Ff.S=-0.1(69g-214sin30)*79=-4496.68Nm
net work done=14641-4496.68=10144.32 Nm
Net Force=214cos30-0.1(69g-214sin30)
net work done=[214cos30-0.1(69g-214sin30)]*79=10144.32 Nm
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