Notes Space 1. Earth has a gravitational field that exerts a force on objects both on it and around it. K1 Define weight as the force on an object due to a gravitational field. Mass is the amount of matter within an object‚ measured in kg Weight is the force of gravity acting on an object’s mass measured in newtons (N). Weight is a force thus a vector quantity. K2 Explain that a change in gravitational potential energy is related
Premium Special relativity General relativity
static Universe based on his mathematical element called Cosmological Constant. On the other hand‚ he discarded his mathematical factor after discovering that the Universe is expanding. The research was printed in Physics Letters B. It was led by scientists from University of Edinburgh. It was conducted two decades ago. The research indicates that the expansion of the Universe is accelerating. This suggests that Einstein’s Constant may still have a part to play in accounting for dark
Premium General relativity Universe Galaxy
ANALYSIS: One vital concept of physics is the energy. The universe possesses energy and matter. For simplicity‚ matter is a substance and energy is used to move these substances. Energy is appearing in various forms. Among those are kinetic‚ gravitational potential‚ elastic potential‚ electric potential‚ thermal‚ chemical‚ etc. Work‚ on the other hand‚ is the change in energy from one form to another by means of an external force. When work is done on an object‚ therefore‚ the object is said to
Premium Potential energy Energy
The Lagrange point phenomenon exists in any system wherein the gravitational fields of two large bodies interact to create five “sweet spots”‚ within which lies the exact centripetal force necessary for a smaller object to remain in a constant orbit with the larger objects. There are five Lagrange points within the Sun-Earth orbit‚ as well as five Lagrange points within the Earth-Moon orbit. These points will vary according to the mass of the two larger objects‚ as well as the distance between
Premium Sun Gravitation Solar System
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
Premium Potential energy Force Energy
(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
Premium Planet Solar System Earth
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
Premium Magnetic field Fundamental physics concepts Energy
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
Premium Potential energy General relativity Force
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
Premium Potential energy Newton's laws of motion Force
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
Premium Potential energy Force Energy