Conservation • Problem Solving Using Conservation of Mechanical Energy • The Law of Conservation of Energy • Energy Conservation with Dissipative Forces: Solving Problems Copyright © 2009 Pearson Education‚ Inc. Units of Chapter 8 • Gravitational Potential Energy and Escape Velocity • Power • Potential Energy Diagrams; Stable and Unstable Equilibrium Copyright © 2009 Pearson Education‚ Inc. 8-1 Conservative and Nonconservative Forces A force is conservative if: the work done
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(P) is 38.200 days—and knowing that the gravitational constant G= 6.673×〖10〗^(-11) m^3 〖kg〗^(-1) s^(-2)(where m= meters‚ kg= kilograms‚ and s=seconds). Express the answer in units of Earth Mass (M_Earth)‚ knowing that M_Earth= 5.980×〖10〗^24 kg. (Hint: first express r and p in standard units: meters and seconds.) Given: M=(4π^2 r^3)/(GP^2 ) is known as Kepler’s Third Law where P is the orbital period‚ r is the orbital radius‚ and G is the gravitational constant. When given this type of problem‚ it
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Circular motion‚ gravitational field‚ and oscillation 1.Define gravitational field strength: Force per unit mass 2. Explain why there is a point between two point masses at which the gravitational field strength is zero. Because gravitational fields of two masses are in opposite directions‚ so there is a point where it is zero What is meant by angular velocity The rate of change of the angular displacement of an object as it moves along curved path. Generally when asked to test
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HSC Physics Notes - Space 9.2 - 1. The Earth has a gravitational field that exerts a force both on it and around it 1. define weight as the force on an object to a gravitational field Mass is the measure of how heavy an object it. Every object has a mass which is static and does not change with any force exerted on it or from it. However‚ weight is the force which is exerted upon an object when it comes into contact with or nearby a gravitational field of some strength. Weight is a force ஃ a vector
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displacement t = time (ms-1) (m) (s) a= v−u t a = acceleration v = final velocity u = initial velocity t =time for the velocity change (ms-2) (ms-1) (ms-1) (s) Equation of Linear Motion Linear Motion Motion with constant velocity Motion with constant acceleration Motion with changing acceleration v= s t v = u + at 1 s = (u + v)t 2 Using Calculus (In Additional Mathematics Syllabus) 1 s = ut + at 2 2 v 2 = u 2 + 2as u = initial velocity v = final velocity a
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we do it to get the force of the fan cart by tying a string in the fan cart and hang a mass until the system is not moving that means that it is in equilibrium state. The tension in the string is equal so that the hanging mass multiplied by the gravitational pull of the earth which is 9.8 ms2 is equal to the force exerted by the fan cart. Then we remove the string and turn on the fan cart and then let it move and record the time when it passes the certain distance in the track. We can say that the
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Holt Physics—Chapter 5: Work and Energy Price I. Section 5.1—Work A. Definition of work 1. Work does not mean the same thing in Physics as it does in the everyday sense of the word. 2. Work is defined as a force causing a displacement. Work = force x displacement W = Fd 3. Work is NOT done on an object unless the displacement is greater than zero 4. The only forces that are considered to do work are those that
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Bernoulli’s Principle states that for an ideal fluid (low speed air is a good approximation)‚ with no work being performed on the fluid‚ an increase in velocity occurs simultaneously with decrease in pressure or a change in the fluid’s gravitational potential energy. This principle is a simplification of Bernoulli’s equation‚ which states that the sum of all forms of energy in a fluid flowing along an enclosed path (a streamline) is the same at any two points in that path. It is named after the
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The deflection of the electron‚ ‚ is dependent on the magnitude of the electric field‚ ‚ and the initial speed of the electron‚ . In one scenario‚ the accelerating plates’ voltage‚ VACC‚ would be held constant‚ while in another‚ the voltage of the deflecting plates‚ VPLATES‚ would be held constant. PREDICTION: In attempting to build a beam for an electron microscope‚ the question of whether or not an electron’s trajectory is analogous to that of a bullet was posed. This lab was constructed in
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created nor destroyed but can be transformed from one form to another. Power is the rate of doing work. SI unit of power is watt. Escape velocity is the minimum velocity with which a projectile is thrown into space in order that it escapes the gravitational pull of the earth and never returns to the surface of the earth. Introduction In the physical world‚ the possession of energy by an object means that it has an ability to do work. Work done is a measure of the “effect” the application of a force
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