# T5 - Applied Science Department (ASD) Centre for Foundation...

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FOSEE , MULTIMEDIA UNIVERSITY (436821-T) MELAKA CAMPUS, JALAN AYER KEROH LAMA, 75450 MELAKA, MALAYSIA. Tel 606 252 3594 Fax 606 231 8799 URL: http://fosee.mmu.edu.my/~asd/ PPH0075 Physics 1 Foundation in Engineering ONLINE TUTORIAL Chapter 5 Work & Energy Applied Science Department (ASD) Centre for Foundation Studies and Extension Education (FOSEE)

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PPH0075 Physics 1 Chapter 5 ASD 1/ 4 TUTORIAL 5 1. A block of mass 2.5 kg is pushed 2.2 m along a frictionless horizontal table by a constant 160 N force directed 25 0 above the horizontal. Determine the work done by : a) the applied force b) the normal force exerted c) the force of gravity d) the net force on the block 2. A 15 kg block is dragged over a rough, horizontal surface by a 70 N force acting 20 0 above the horizontal. The block is displaced 5.0 m, and the coefficient of kinetic friction is 0.30. Find the work done by : a) the 70 N force, b) the normal force, c) the force of gravity and d) What is the energy lost due to friction ? 3. A cart loaded with bricks has a total mass of 18.0 kg and is pulled at constant speed by a rope. The rope is inclined at 20.0 0 above the horizontal, and the cart moves 20.0 m on a horizontal surface. The coefficient of kinetic friction between ground and cart is 0.50. a) What is the tension in the rope ? b) How much work is done on the cart by the rope ? c) What is the energy lost due to friction ?
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## This note was uploaded on 10/30/2010 for the course FOSEE CVL1040 taught by Professor None during the Spring '09 term at Multimedia University, Cyberjaya.

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T5 - Applied Science Department (ASD) Centre for Foundation...

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