CHAPTER 2 - GRAVITY AND MOTION
... but the direction changes so the velocity is not constant. The resultant acceleration must be produced by a force. 3. (d) If the distance between the two bodies is increased by a factor of 4, the force of gravity is an inverse square law so the force is decreased by a factor of 4x4=16. 4. (a) True. ...
... but the direction changes so the velocity is not constant. The resultant acceleration must be produced by a force. 3. (d) If the distance between the two bodies is increased by a factor of 4, the force of gravity is an inverse square law so the force is decreased by a factor of 4x4=16. 4. (a) True. ...
Rotational Motion I
... The spine and upper body are represented as a uniform horizontal rod of weight 350 N, pivoted at the base of the spine. The erector spinalis muscle, attached at a point 2/3 of the way up the spine, maintains the position of the back. The angle between the spine and this muscle is 12.0°. Find the ten ...
... The spine and upper body are represented as a uniform horizontal rod of weight 350 N, pivoted at the base of the spine. The erector spinalis muscle, attached at a point 2/3 of the way up the spine, maintains the position of the back. The angle between the spine and this muscle is 12.0°. Find the ten ...
Newton`s 3rd Law
... • When two objects collide, in the absence of friction, momentum is not lost. • The Law of Conservation of Momentum says that momentum does not change when objects interact, it remains the same before and after the ...
... • When two objects collide, in the absence of friction, momentum is not lost. • The Law of Conservation of Momentum says that momentum does not change when objects interact, it remains the same before and after the ...
drburtsphysicsnotes2 - hardingscienceinstitute
... What is the sum of the forces on you right now Assume you are not moving relative to other objects on earth (even though we are moving relative to the rest of the solar system) ...
... What is the sum of the forces on you right now Assume you are not moving relative to other objects on earth (even though we are moving relative to the rest of the solar system) ...
Ch6 momentum and collision
... All these equations are true even if the force is system. So the total momentum of the universe not constant. Thus area under force vs. time is conserved. graphs is the impulse delivered by the force. ...
... All these equations are true even if the force is system. So the total momentum of the universe not constant. Thus area under force vs. time is conserved. graphs is the impulse delivered by the force. ...
Exam Name MULTIPLE CHOICE. Choose the one alternative that
... B) The ceiling pulling upward on the string with an 8.0-N force. C) The string pulling upward on the toy with an 8.0-N force. D) The string pulling downward on the ceiling with an 8.0-N force. 12) A golf club hits a golf ball with a force of 2400 N. The golf ball hits the club with a force A) exactl ...
... B) The ceiling pulling upward on the string with an 8.0-N force. C) The string pulling upward on the toy with an 8.0-N force. D) The string pulling downward on the ceiling with an 8.0-N force. 12) A golf club hits a golf ball with a force of 2400 N. The golf ball hits the club with a force A) exactl ...
5. Universal Laws of Motion
... angular momentum = mass x velocity x radius • The angular momentum of an object cannot change unless an external twisting force (torque) is acting on it • Earth experiences no twisting force as it orbits the Sun, so its rotation and orbit will continue indefinitely ...
... angular momentum = mass x velocity x radius • The angular momentum of an object cannot change unless an external twisting force (torque) is acting on it • Earth experiences no twisting force as it orbits the Sun, so its rotation and orbit will continue indefinitely ...
Newtons Laws
... Attractive force between all objects with mass Universal – everything with mass has it and is affected by it Mass & gravity = directly proportional m↑, g↑ Distance & gravity = inversely proportional d↑, g↓ Attractive force is from centers of objects ...
... Attractive force between all objects with mass Universal – everything with mass has it and is affected by it Mass & gravity = directly proportional m↑, g↑ Distance & gravity = inversely proportional d↑, g↓ Attractive force is from centers of objects ...
Powerpoint for today
... held by the parking brake, what is the magnitude of the frictional force that holds your car in place? B. The coefficient of static friction between your car's wheels and the road when wet is 0.30. What is the largest angle slope on which you can park your car in the rain so that it will not slide d ...
... held by the parking brake, what is the magnitude of the frictional force that holds your car in place? B. The coefficient of static friction between your car's wheels and the road when wet is 0.30. What is the largest angle slope on which you can park your car in the rain so that it will not slide d ...
File
... 12. *Changing speed from 15 m/s to 10 m/ is ____________________ acceleration. 13. *Riding uphill your acceleration is ____________________, when you go down the other side your acceleration is then ______________________. Motion and Force: 14. A push or pull that one body exerts on another. _______ ...
... 12. *Changing speed from 15 m/s to 10 m/ is ____________________ acceleration. 13. *Riding uphill your acceleration is ____________________, when you go down the other side your acceleration is then ______________________. Motion and Force: 14. A push or pull that one body exerts on another. _______ ...
Physics Revision sheet 2 File
... 23. A big hippo is sitting in the middle of a pool. His body exerts a friction force of 480N. How much acceleration would the animal undergo if a force of 690N is applied on his 1.3tonne body? ...
... 23. A big hippo is sitting in the middle of a pool. His body exerts a friction force of 480N. How much acceleration would the animal undergo if a force of 690N is applied on his 1.3tonne body? ...
Newton`s Second Law
... 3. Insert the known values into the equation, and solve. p = mv = 6.00 kg 10.0 m/s p = 60.0 kg • m/s down the alley ...
... 3. Insert the known values into the equation, and solve. p = mv = 6.00 kg 10.0 m/s p = 60.0 kg • m/s down the alley ...
Modified Newtonian dynamics
In physics, modified Newtonian dynamics (MOND) is a theory that proposes a modification of Newton's laws to account for observed properties of galaxies. Created in 1983 by Israeli physicist Mordehai Milgrom, the theory's original motivation was to explain the fact that the velocities of stars in galaxies were observed to be larger than expected based on Newtonian mechanics. Milgrom noted that this discrepancy could be resolved if the gravitational force experienced by a star in the outer regions of a galaxy was proportional to the square of its centripetal acceleration (as opposed to the centripetal acceleration itself, as in Newton's Second Law), or alternatively if gravitational force came to vary inversely with radius (as opposed to the inverse square of the radius, as in Newton's Law of Gravity). In MOND, violation of Newton's Laws occurs at extremely small accelerations, characteristic of galaxies yet far below anything typically encountered in the Solar System or on Earth.MOND is an example of a class of theories known as modified gravity, and is an alternative to the hypothesis that the dynamics of galaxies are determined by massive, invisible dark matter halos. Since Milgrom's original proposal, MOND has successfully predicted a variety of galactic phenomena that are difficult to understand from a dark matter perspective. However, MOND and its generalisations do not adequately account for observed properties of galaxy clusters, and no satisfactory cosmological model has been constructed from the theory.