Jeopardy
... What is the net force acting on a 40 kg box on the ground that is being pulled from the right with a force of 70 N and to the left with a force of 20 N. ...
... What is the net force acting on a 40 kg box on the ground that is being pulled from the right with a force of 70 N and to the left with a force of 20 N. ...
Uniform Circular Motion
... nonexistent, force “centrifugal force”. You are NOT flung to the outside. Your inertia resists the inward acceleration and your body simply wants to keep moving in straight line motion! As with all other types of acceleration, your body feels as if it is being flung in the opposite direction of the ...
... nonexistent, force “centrifugal force”. You are NOT flung to the outside. Your inertia resists the inward acceleration and your body simply wants to keep moving in straight line motion! As with all other types of acceleration, your body feels as if it is being flung in the opposite direction of the ...
Ch 3 test
... ____ 23. A stationary object has: a. both inertia and momentum. b. neither inertia nor momentum. c. momentum but no inertia. d. inertia but no momentum. ____ 24. An astronaut with a mass of 100 kilograms is floating in outer space. If the astronaut ...
... ____ 23. A stationary object has: a. both inertia and momentum. b. neither inertia nor momentum. c. momentum but no inertia. d. inertia but no momentum. ____ 24. An astronaut with a mass of 100 kilograms is floating in outer space. If the astronaut ...
Uniform Circular Motion
... direction.1 For the body to constantly change direction, rotate around an axis, and keep a constant speed the force must also be perpendicular to the direction of the velocity at all times.1 The forces direction must be towards the axis, essentially pulling the body inwards. As the velocity is alway ...
... direction.1 For the body to constantly change direction, rotate around an axis, and keep a constant speed the force must also be perpendicular to the direction of the velocity at all times.1 The forces direction must be towards the axis, essentially pulling the body inwards. As the velocity is alway ...
9J Gravity and Space - We can`t sign you in
... The shape of a planet’s orbit around is an ellipse (oval). What would happen to the planets if there was no gravity from the Sun? ...
... The shape of a planet’s orbit around is an ellipse (oval). What would happen to the planets if there was no gravity from the Sun? ...
acceleration ~ net force
... it is the pressure exerted on the surface that changes in each of our cases • For a constant force, an INCREASE in area of contact will cause a DECREASE in the pressure. ...
... it is the pressure exerted on the surface that changes in each of our cases • For a constant force, an INCREASE in area of contact will cause a DECREASE in the pressure. ...
Physics I - Rose
... The force is less than your maximum pushing force of 1000 N. That is, once in motion, the box could be kept moving up the ramp. However, if you stop on the ramp and want to start the box from rest, the model of static friction applies. The analysis is the same except that the coefficient of static f ...
... The force is less than your maximum pushing force of 1000 N. That is, once in motion, the box could be kept moving up the ramp. However, if you stop on the ramp and want to start the box from rest, the model of static friction applies. The analysis is the same except that the coefficient of static f ...
Transfer Functions
... and the response of the system is controlled to a large extent by the damping in the system. Finally, as Ω becomes large, the transfer function becomes: H (Ω → ∞ ) ∝ ...
... and the response of the system is controlled to a large extent by the damping in the system. Finally, as Ω becomes large, the transfer function becomes: H (Ω → ∞ ) ∝ ...
physics midterm review
... 2. Check out www.physicsclassroom.com. There are very good (and accurate!) explanations of conceptual topics as well as problems to practice. These can be found in the “physics tutorial” section of the site. 3. Review the following topics: ...
... 2. Check out www.physicsclassroom.com. There are very good (and accurate!) explanations of conceptual topics as well as problems to practice. These can be found in the “physics tutorial” section of the site. 3. Review the following topics: ...
Student Exploration Sheet: Growing Plants
... 2. Suppose several more horses were hitched up to the same cart. How would this affect the speed of the cart? __________________________________________________________ Although these questions may seem simple, they form the basis of Newton’s second law of motion. The Fan Cart Physics Gizmo™ can be ...
... 2. Suppose several more horses were hitched up to the same cart. How would this affect the speed of the cart? __________________________________________________________ Although these questions may seem simple, they form the basis of Newton’s second law of motion. The Fan Cart Physics Gizmo™ can be ...
Back Questions on Momentum
... 2V to the left. After they collide, and stick together, the combined masses are at rest. What is the mass of the object moving to the left, in terms of the mass moving to the right? a) M ...
... 2V to the left. After they collide, and stick together, the combined masses are at rest. What is the mass of the object moving to the left, in terms of the mass moving to the right? a) M ...
Assignment 8 Solutions
... (a) What is the mass of the ellipsoid? Since this system is in equilibrium, we know two important things: the sum of the torques is zero, and the sum of the forces on the system is zero. Since the sum of the torques is zero, we can relate the mass of the ellipse, me with the mass of the square, mc ...
... (a) What is the mass of the ellipsoid? Since this system is in equilibrium, we know two important things: the sum of the torques is zero, and the sum of the forces on the system is zero. Since the sum of the torques is zero, we can relate the mass of the ellipse, me with the mass of the square, mc ...
Circular Motion
... When an object moves in a circle, the net force toward the center of the circle is called the centripetal force To analyze centripetal acceleration situations accurately, you must identify the agent of the force that causes the acceleration (such as tension on a string). Then you can apply Newton’s ...
... When an object moves in a circle, the net force toward the center of the circle is called the centripetal force To analyze centripetal acceleration situations accurately, you must identify the agent of the force that causes the acceleration (such as tension on a string). Then you can apply Newton’s ...
TEST
... A. bullet G hits the ground before bullet H does. B. both bullets hit the ground at the same time. C. bullet H hits the ground before bullet G does. D. not enough information is given to compare when they hit. E. both hit at the same time 38. Projectiles are objects that are given an initial velocit ...
... A. bullet G hits the ground before bullet H does. B. both bullets hit the ground at the same time. C. bullet H hits the ground before bullet G does. D. not enough information is given to compare when they hit. E. both hit at the same time 38. Projectiles are objects that are given an initial velocit ...
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.