Physics 1 – Mechanics and Heat Lecture Notes Prepared by: ENGR. HAROLD JAN R. TERANO‚ ECE Lesson 5 ROTATIONAL KINEMATICS AND DYNAMICS Uniform Circular Motion – an object moves at a constant speed along a circular path. Velocity is always tangent to the path in circular motion. Speed is constant‚ velocity is not. Centripetal Acceleration‚ – acceleration that maintains the object along a circular path directed towards the center. Also called as radial acceleration
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IMPROVING BRAKE EFFICIENCY IN CARS WITHOUT CHANGING TYRES Paul Danny Anandan B.E Medway School Of Engineering‚ University Of Greenwich PREVIOUS TRACK RECORD AND PROJECT BACKGROUND INTRODUCTION Since 1918 the revolution in brake technology has started from the invention of four-wheel hydraulic brake systems by Malcolm Loughead. The hydraulic brakes have replaced mechanical brakes which were in use at that time. The mechanical brakes had several disadvantages. It had a difficulty to brake all the wheels
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The Relationship Involving Acceleration‚ Net Force‚ and Mass Giho Park Purpose The purpose of this lab investigation is to observe the relationship among the net force‚ mass‚ and acceleration of an object. Hypothesis/Prediction Part A If the net force increases with a constant mass‚ then the acceleration would increase‚ because the force would push the object to increase the velocity. Part B If the mass of the cart increases with a constant net force‚ then the acceleration would
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handling and moving techniques can damage the skin: Adjusted mobility aids. Equipment/Techniques; Possible Hazard * Chairs; Clients inability to get out of the chair * Seat surface may cause uneven distribution of pressure‚ Perspiration or friction (Patient weight & size may cause pressure on arms and hips if too large for chair size) * Wheelchairs; Maybe ill-fitting causing pressure * Tissue damage caused contact with protrusions such as footplates * Beds; Confinement
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Rebecca Nov. 2013 Kyle‚ Mat‚ Alex Lab M7 Conservation of Momentum Abstract: This experiment involved the use of gliders on an air track which nearly isolates the colliding system from external forces to create low friction totally elastic and inelastic collisions. Seven different collisions were made‚ four elastic and three inelastic. The collisions consisted of only two gliders with varying masses and speeds. Each glider cart was equipped with a flag‚ and its passage through a photogate
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nearly the size of England’s. Obviously the British felt threatened by this and formed the alliance discussed previously. As you can see without this case the Alliance system would have had less effect on the war. Not only did this factor create friction but it also created a parallel cause. Imperialism however‚ is also connected to this‚ Imperialism is when a country wants an empire‚ and the best way of doing
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Abstract (Summary): This experiment was performed to prove that energy exists in many different forms but it can never be created or destroyed. Energy can only be transformed from one type into another. This experiment was executed by mounting a weight onto a weight hook and releasing the pin to allow it to fall. When the weight reached the lowest position it started to rewind in the opposite direction and so the weight started to be lifted. The height was measured and then this was repeated with
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lap on the smaller pulley is 165°. The coefficient of friction is 0.3. Determine the effect of power transmission in the following cases: i) Initial tension in the belt is increased by 10%‚ ii) Initial tension in the belt is decreased by 10%‚ iii) Angle of lap is increased by 8% by the use of an idler pulley‚ for the same speed and the tension on the tight side‚ and iv) Coefficient of friction is increased by 8% by suitable dressing to the friction surface of the belt. Also state which of the above
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evidence at the scene after the accident has occurred. The way that we calculate the speed of vehicles is by using a formula that measures friction and the distant of skid marks. We have little cheat sheets that tell us what to add and how to figure these formulas. For example: to obtain the speed of a vehicle you need to multiply 30 x distance x friction. To obtain friction you would have to find the speed squared and divide that by 30 x distance‚ and to find the velocity you would take the speed and multiply
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There is a number of different possible reasons that energy could have been lost in our car: some of the air in the balloon may have escaped through the gaps between the balloon and the straws‚ this might have slowed down the car by a fraction. The friction from the wheels may have resulted in loss of energy. The aerodynamics of the car could have altered the speed‚ but in this experiment I don’t think this would have mattered that much judging by the speed and the scale of the car. I think the most
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