1 References Slides also Available at Some Tricks Dynamics
... Why does a spinning ice skater 's angular velocity increase as she brings her arms in toward the body: (A) Her mass moment of inertia is reduced. (B) Her angular momentum is constant. (C) Her radius of gyration is reduced. (D) all of the above As the skater brings her arms in, her radius of gyration ...
... Why does a spinning ice skater 's angular velocity increase as she brings her arms in toward the body: (A) Her mass moment of inertia is reduced. (B) Her angular momentum is constant. (C) Her radius of gyration is reduced. (D) all of the above As the skater brings her arms in, her radius of gyration ...
Force of Gravity
... and trains all keep in motion from friction…without friction you would not be able to move the bike, car, train, or walk on the road. Not helpful metal parts touching in a machine can cause too much friction = heat and energy and parts will break or overheat. ...
... and trains all keep in motion from friction…without friction you would not be able to move the bike, car, train, or walk on the road. Not helpful metal parts touching in a machine can cause too much friction = heat and energy and parts will break or overheat. ...
Newton`s Laws 2.2
... All of the cue ball’s momentum was transferred to the other pool ball. That ball now moved away with the same amount of momentum the cue ball had. Law of conservation of momentum: any time two or more objects interact, they may exchange momentum, but the total amount of momentum stays the same. ...
... All of the cue ball’s momentum was transferred to the other pool ball. That ball now moved away with the same amount of momentum the cue ball had. Law of conservation of momentum: any time two or more objects interact, they may exchange momentum, but the total amount of momentum stays the same. ...
Newton`s Second Law of Motion
... All of the cue ball’s momentum was transferred to the other pool ball. That ball now moved away with the same amount of momentum the cue ball had. Law of conservation of momentum: any time two or more objects interact, they may exchange momentum, but the total amount of momentum stays the same. ...
... All of the cue ball’s momentum was transferred to the other pool ball. That ball now moved away with the same amount of momentum the cue ball had. Law of conservation of momentum: any time two or more objects interact, they may exchange momentum, but the total amount of momentum stays the same. ...
Powerpoint Slides
... net external force, an object will keep moving at a constant speed in a straight line, or remain at rest. This is also known as the Law of Inertia. ...
... net external force, an object will keep moving at a constant speed in a straight line, or remain at rest. This is also known as the Law of Inertia. ...
Simple Harmonic Motion
... body moves back and forth around an equilibrium position. • Period: The time required for one full oscillation ...
... body moves back and forth around an equilibrium position. • Period: The time required for one full oscillation ...
PSC1121Chap2-4
... Ex: equal size bags of cotton and rocks may have equal volumes but unequal masses Different from weight; weight depends on gravity you would weigh less on the moon than on Earth because the moon’s gravity is weaker than Earth’s Mass does not change if gravity varies Mass and weight are directly pr ...
... Ex: equal size bags of cotton and rocks may have equal volumes but unequal masses Different from weight; weight depends on gravity you would weigh less on the moon than on Earth because the moon’s gravity is weaker than Earth’s Mass does not change if gravity varies Mass and weight are directly pr ...
Experiment 7 Simple Harmonic Motion Reading:
... by the equilibrium position of the spring. If we gently add a mass to the spring, the spring will stretch to a new (lower) equilibrium position, -xo = - mg/k, where g is the gravitational constant. At this position, the vertical restoring force of the spring balances the weight. In what follows, we ...
... by the equilibrium position of the spring. If we gently add a mass to the spring, the spring will stretch to a new (lower) equilibrium position, -xo = - mg/k, where g is the gravitational constant. At this position, the vertical restoring force of the spring balances the weight. In what follows, we ...
Centripetal Force
... Where does the object go? • A ball that is on the end of a string is whirled in a vertical circular path. – If the string breaks at the position shown in (a), the ball will move vertically upward in free fall. – If the string breaks at the top of the ball’s path, as in (b), the ball will move along ...
... Where does the object go? • A ball that is on the end of a string is whirled in a vertical circular path. – If the string breaks at the position shown in (a), the ball will move vertically upward in free fall. – If the string breaks at the top of the ball’s path, as in (b), the ball will move along ...
Fun items for the teaching of mechanics
... 7. Estimate the world record of board-jumping and pole-vaulting given that the world record of 100 m sprint is 10s. Explain the differences between the actual record and the estimated results. 8. A fluid with R.D. (relative density) = 1 but viscosity lower than that of water will be used in future s ...
... 7. Estimate the world record of board-jumping and pole-vaulting given that the world record of 100 m sprint is 10s. Explain the differences between the actual record and the estimated results. 8. A fluid with R.D. (relative density) = 1 but viscosity lower than that of water will be used in future s ...
Name
... 49. The Earth moves about the Sun in an elliptical orbit. As the Earth moves closer to the Sun, does the Earth-Sun system's moment of inertia increase, decrease, or remain constant? 50. Two hoops or rings (I = MR2) are centered, lying on a phonograph record. The smaller one has a radius of 0.05 m an ...
... 49. The Earth moves about the Sun in an elliptical orbit. As the Earth moves closer to the Sun, does the Earth-Sun system's moment of inertia increase, decrease, or remain constant? 50. Two hoops or rings (I = MR2) are centered, lying on a phonograph record. The smaller one has a radius of 0.05 m an ...
Newton`s Laws
... An object’s weight on planet Earth in Newtons is equal to its mass in kilograms times 9.8 m/s2. ...
... An object’s weight on planet Earth in Newtons is equal to its mass in kilograms times 9.8 m/s2. ...
File
... 4. Explain how you could tell whether an object has positive, negative or zero acceleration. If an object was speeding up, it would have positive acceleration. If an object was slowing down, it would have negative acceleration. If an object was sitting still or moving without changing speed, it wou ...
... 4. Explain how you could tell whether an object has positive, negative or zero acceleration. If an object was speeding up, it would have positive acceleration. If an object was slowing down, it would have negative acceleration. If an object was sitting still or moving without changing speed, it wou ...
p14jmacProjectile Motion
... A rock is thrown upward at an angle. What happens to the horizontal component of its velocity as it rises? (Neglect air resistance.) (a) it decreases ...
... A rock is thrown upward at an angle. What happens to the horizontal component of its velocity as it rises? (Neglect air resistance.) (a) it decreases ...
m 1 + m 2 - Kelso High School
... The person continues to move forward at a constant speed. Newton’s first law Until they collide with the dashboard etc, stopping them suddenly. F = (mv – mu)/t so short time means large average force Wearing a seat belt The person is brought to a stop at the same time as the car is stopping. The sto ...
... The person continues to move forward at a constant speed. Newton’s first law Until they collide with the dashboard etc, stopping them suddenly. F = (mv – mu)/t so short time means large average force Wearing a seat belt The person is brought to a stop at the same time as the car is stopping. The sto ...
Mechanical Equilibrium
... An object is moving if its position relative to a fixed point is changing. You can calculate the speed of an object by dividing the distance covered by time. Speed is a description of how fast an object moves; velocity is how fast and in ...
... An object is moving if its position relative to a fixed point is changing. You can calculate the speed of an object by dividing the distance covered by time. Speed is a description of how fast an object moves; velocity is how fast and in ...