4/18/2017 11:55 PM o/50 debook. Print calculator Question 2 of 2 Sapling Learnin

Question

4/18/2017 11:55 PM o/50 debook. Print calculator Question 2 of 2 Sapling Learning Map A A piece of luggage is being loaded onto an airplane by way of an inclined conveyor belt. The bag, which has a mass of 15.0 kg, travels 4.50 m up the conveyor belt at a constant speed without slipping. If the conveyor belt is inclined at a 60.0° angle, calculate the work done on the bag by 4.50 m the force of gravity (Wg) the normal force (WN) the friction force (W) 60.0 the conveyor belt (Wconveyo) the net force (Whet) 662 J 573 J -662 J -573J Zero 331 J -331 J wa W What Woonveyor WN Ae 2 checks Answer e Ext Previous Next Hint

Explanation / Answer

m = 15.0 kg
L = 4.50 m
height raised = L * sin(60) = 4.5 * sin(60) = 3.9 m
Work done by the force of gravity = - m*g*H = - 15 * 9.8 * 3.9 J
Work done by the force of gravity = - 573 J

Work done by Normal Force, = 0

Fr = m*g*sin(60) = 15 * 9.8 * sin(60) = 127.3 N

Work done by Friction Force, = Fr * L = 127.3 * 4.5
Work done by Friction Force, = 573 J

Work done by Belt = 573 J
Wnet = 0 J

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