Title : Centripetal force Objective To measure the centripetal force for whirling a mass round a horizontal circle and compare the result with the theoretical value given by F = m(2r . Apparatus 12 slotted weights with hanger (0.02kg each) 1 rubber bung with nylon string about 1.5m 1 glass tube about 20cm long 1 triple beam balance 1 meter rule 1 stop watch Several small paper markers Theory When a mass m attached to a string is whirled round a horizontal circle of radius r‚ the
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Science Notes: Fundamental Forces of Nature All forces in nature may be classified into four types. The gravitational force holds together the universe at large‚ plus the atmosphere‚ water‚ and us to the planet Earth. The electromagnetic force governs atomic level phenomena‚ binding electrons to atoms‚ and atoms to one another to form molecules and compounds. The strong nuclear force holds the nucleus together. The fourth force‚ the weak nuclear force‚ is responsible for certain types of nuclear
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Buoyant Forces The purpose of this lab is to calculate buoyant forces of objects submerged in water. The first step in the lab was to measure the mass of a metal cylinder‚ which was found to be 100g‚ and then to calculated it’s weight‚ which was .98 newtons. Then next step was to measure the apparent weight of the cylinder when it is completely submerged in a bath of water using the formula Wa=ma*g ‚ this was found to be 88.5grams. Knowing these two numbers‚ the buoyant force that the water
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Porters 5 forces Threat of New Entry: Obesity is a big problem in the United States which is becoming a government and healthcare issue. Weight Watchers has played a role in the development of a new national awareness of healthful eating‚ lifestyles changes‚ and weight control. Weight Watchers International had experienced it biggest threat mostly because of new competition and changes in technology. When the over the counter weightless drug launched it had a drastic effect on their market. Switching
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Physics notes Force is an agent which produces or tends to produce motion in an object‚ stops or tends to stop ‚ motion of an object Newton’s 1st law of motion: If an object is at rest‚ will remain at rest until or unless an external force act on it. If an object is in motion ‚ it continues its motion until or unless an external force act on it Newton’s 1st law of motion is also called first law of inertia. Inertia: The tendency of an object to resist any change in its state of motion
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Physics lab:9 Equilibrium of parallel force 11/09/2012 By: Camilo Salazar Jillian Ellis Purpose: To understand the conditions need for a rigid body to be in equilibrium when there are forces acting on the body from different sides. Theory: When force is applied on a rigid body for example a ruler it can either be in equilibrium or it can be unbalance. When the force is unbalance what would happen is this motion the body can be either translational or rotational. “A body in translational
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defined as the force acting perpendicular to a unit area. It is the result of a force distributed over an area. A theater seat’s large padded seat and back offer a larger area to support your weight than a bicycle seat does. Thus‚ the theater seat exerts less pressure on you and is more comfortable than the bicycle seat. Many other everyday situations also involve pressure and it is not only about the theater or bicycle seat but as well as in fluids. To calculate pressure‚ divide the force by the area
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Porter’s 5 Forces Analysis = Suppliers‚ Customers‚ New Entrants‚ Substitute Products‚ Competitors What is Porter’s 5 Forces Analysis? Porter’s 5 forces analysis represents the competitive environment of the firm. It is a strategic foresight to avoid putting the competitive edge at risk and ensure the profitability of products on a long term. For the company this vision is quite important because the firm is able to direct its innovations in terms of choice of strategies and investments. The
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A hockey stick exerts an average force of 39N on a 0.2kg hockey puck over a displacement of 0.22m. if the hockey puck started from rest‚ what is the final velocity of the puck? Assume no friction. Your physics teacher walking with the aid of a cane approaches a skateboard of 3.5 kg lying on the side walk. Pushing with an angle of 60 degree down from the horizontal with his cane‚ he applies a force of 115N‚ which is enough to toll the skateboard out of his way. Calculate the initial acceleration
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he landed on the ground? (c) how far did he jump? SELF CHECK ACTIVITY ON LAWS OF MOTION 1. A 3/.5 kg papaya is pushed across a table. If the acceleration of the papaya is 2.2 m/square second to the left‚ what is the force exerted on the papaya? 2. A constant net force of 200 N is exerted to accelerate cart from rest to a velocity of 40 m/s in 10 s. What is the mass of the
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