Work and Energy
... Example: A model rocket engine contained explosives stores 3.50x103 J of chemical potential energy. When launched the stored chemical energy is transformed into gravitational potential energy. Calculate how efficiently the rocket transforms the stored chemical energy into gravitational potential en ...
... Example: A model rocket engine contained explosives stores 3.50x103 J of chemical potential energy. When launched the stored chemical energy is transformed into gravitational potential energy. Calculate how efficiently the rocket transforms the stored chemical energy into gravitational potential en ...
Chapter 4 Conservation laws for systems of particles
... force.’ Strictly speaking, we cannot define a potential energy of a single r0 k force – instead, we need to define the potential energy of a pair of forces. A force can’t exist by itself – there must always be an equal and opposite j O reaction force acting on a second body. In all of the discussion ...
... force.’ Strictly speaking, we cannot define a potential energy of a single r0 k force – instead, we need to define the potential energy of a pair of forces. A force can’t exist by itself – there must always be an equal and opposite j O reaction force acting on a second body. In all of the discussion ...
Sample Problem
... Frames of reference which may move relative to each other but in which observers find the same value for the acceleration of a third moving particle. Inertial reference frames are moving at constant velocity relative to each other. It is impossible to identify which one may be at rest. Newton’s Laws ...
... Frames of reference which may move relative to each other but in which observers find the same value for the acceleration of a third moving particle. Inertial reference frames are moving at constant velocity relative to each other. It is impossible to identify which one may be at rest. Newton’s Laws ...
CP7e: Ch. 8 Problems
... is tethered by a wire so that it flies in a circle 30.0 m in radius. The airplane engine provides a net thrust of 0.800 N perpendicular to the tethering wire. (a) Find the torque the net thrust produces about the center of the circle. (b) Find the angular acceleration of the airplane when it is in l ...
... is tethered by a wire so that it flies in a circle 30.0 m in radius. The airplane engine provides a net thrust of 0.800 N perpendicular to the tethering wire. (a) Find the torque the net thrust produces about the center of the circle. (b) Find the angular acceleration of the airplane when it is in l ...
Gravitational Potential Energy
... • Imagine a rigid body that does work or has work done on it to overcome only inertia (i.e. to accelerate it) • Doesn’t experience friction, nor does it rise or fall in a gravitational field • Under these conditions the net work done equals the body’s change in kinetic energy. • W = ΔKE = KEf - KEi ...
... • Imagine a rigid body that does work or has work done on it to overcome only inertia (i.e. to accelerate it) • Doesn’t experience friction, nor does it rise or fall in a gravitational field • Under these conditions the net work done equals the body’s change in kinetic energy. • W = ΔKE = KEf - KEi ...
Circular Motion - Effingham County Schools
... diameter of 8.5 m. Suppose two bowling balls are right next to each other in the rack. What is the gravitational force between the two—magnitude and direction? 2) What is the magnitude and direction of the force of gravity on a 60 kg person? (Mearth = 5.98x1024 kg, Rearth = 6.37 x 106 m) ...
... diameter of 8.5 m. Suppose two bowling balls are right next to each other in the rack. What is the gravitational force between the two—magnitude and direction? 2) What is the magnitude and direction of the force of gravity on a 60 kg person? (Mearth = 5.98x1024 kg, Rearth = 6.37 x 106 m) ...
LAHS Physics - LAPhysics.com
... 54. A net force F is required to give an object with mass m an acceleration a. If a net force 6F is applied to an object with mass 2m, what is the acceleration on this object? A) a B) 2a C) 3a D) 4a E) 6a 55. A rock is suspended from a string; and it accelerates downward. Which one of the following ...
... 54. A net force F is required to give an object with mass m an acceleration a. If a net force 6F is applied to an object with mass 2m, what is the acceleration on this object? A) a B) 2a C) 3a D) 4a E) 6a 55. A rock is suspended from a string; and it accelerates downward. Which one of the following ...
Dynamics and Space Homework Exercises
... 1. Paul and Paula have been training to run the 200 m race in a local competition. After the race, they would both like to know what their speed was. ...
... 1. Paul and Paula have been training to run the 200 m race in a local competition. After the race, they would both like to know what their speed was. ...
Chapter 10 Student Notes-Print Me
... • ____________________________ • This was used as a comparison for the 1st steam engines to show how much stronger than a horse they were ...
... • ____________________________ • This was used as a comparison for the 1st steam engines to show how much stronger than a horse they were ...
State Fair Field Trip Student Name___Teacher Key
... Are some horses moving faster than others? With all of its beauty and seeming simplicity, the carousel is a delicate balance of motion and forces. All of the horses move through one complete circle in the same amount of time. The horses on the outside of the carousel have to cover more distance than ...
... Are some horses moving faster than others? With all of its beauty and seeming simplicity, the carousel is a delicate balance of motion and forces. All of the horses move through one complete circle in the same amount of time. The horses on the outside of the carousel have to cover more distance than ...
1. A skydiver of mass 80 kg falls vertically with a constant speed of
... two reactions drawn as shown; force downwards on pedals; Ignore any other vertical forces and all horizontal forces. The total upward vector lengths should approximately equal the downward vector lengths. ...
... two reactions drawn as shown; force downwards on pedals; Ignore any other vertical forces and all horizontal forces. The total upward vector lengths should approximately equal the downward vector lengths. ...
Semester 1 Final Review Questions Physics First Semester
... Memorize these “Big Ideas” from each of the units. Each is worth 5 points. Recite them to me to receive your points. Unit 0 – Think like a Physicist - Physics is the branch of science concerned with the nature and interactions of matter, energy, forces, and motion throughout the universe. Physical l ...
... Memorize these “Big Ideas” from each of the units. Each is worth 5 points. Recite them to me to receive your points. Unit 0 – Think like a Physicist - Physics is the branch of science concerned with the nature and interactions of matter, energy, forces, and motion throughout the universe. Physical l ...
Energy Skate Park Lab SECTION 1 – Energy Transformation Go to
... You will build three – 3- different tracks. All tracks will begin and end at the same height. The shape of the tracks will differ. One track will be a traditionally shaped U-pipe with its lowest point in the center, an equal distance from the ends. The other two tracks should be lopsided, with their ...
... You will build three – 3- different tracks. All tracks will begin and end at the same height. The shape of the tracks will differ. One track will be a traditionally shaped U-pipe with its lowest point in the center, an equal distance from the ends. The other two tracks should be lopsided, with their ...
Hunting oscillation
Hunting oscillation is a self-oscillation, usually unwanted, about an equilibrium. The expression came into use in the 19th century and describes how a system ""hunts"" for equilibrium. The expression is used to describe phenomena in such diverse fields as electronics, aviation, biology, and railway engineering.