Phys 172 Exam 1, 2010 fall, Purdue University
... over to grab it. You jerk the bag off the ground by pulling on it with a constant force of 130 N, at an angle of 70° above horizontal, for 0.1 seconds. The force of your pull is in the x-y plane (where the x-axis is parallel with the ground, and the y-axis points straight up in the air). We want to ...
... over to grab it. You jerk the bag off the ground by pulling on it with a constant force of 130 N, at an angle of 70° above horizontal, for 0.1 seconds. The force of your pull is in the x-y plane (where the x-axis is parallel with the ground, and the y-axis points straight up in the air). We want to ...
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... Out of common experience, we know that any change in velocity must be due to an interaction between an object (a body) and something in its surroundings. An interaction that can cause an acceleration of a body is called a force. Force can be loosely defined as a push or pull on the body. The r ...
... Out of common experience, we know that any change in velocity must be due to an interaction between an object (a body) and something in its surroundings. An interaction that can cause an acceleration of a body is called a force. Force can be loosely defined as a push or pull on the body. The r ...
Chapter 7
... Could a roller blade and a 1-ton truck ever have the same momentum? Yes – if the velocity of the skate was substantially more than the truck since the mass is so much less. ...
... Could a roller blade and a 1-ton truck ever have the same momentum? Yes – if the velocity of the skate was substantially more than the truck since the mass is so much less. ...
Periodic Motion
... dt d 2x a 2 2 A cos ( t f ) dt Remember, simple harmonic motion is not uniformly accelerated motion Periodic Motion ...
... dt d 2x a 2 2 A cos ( t f ) dt Remember, simple harmonic motion is not uniformly accelerated motion Periodic Motion ...
Widely separated binary systems of very low mass stars Phan Bao
... frame. + We choose the ground to be our inertial frame (stationary), so using Newton’s second law for the passenger with a mass m : ...
... frame. + We choose the ground to be our inertial frame (stationary), so using Newton’s second law for the passenger with a mass m : ...
Supplement on Lagrangian, Hamiltonian Mechanics
... as its first two arguments. This way L will (in general) change in time even in the case where ∂L/∂t = 0, and of course if ∂L/∂t 6= 0 this can be yet another source of time dependence. • Consider (9) with a = 0: the oscillator will oscillate, and the value of L will oscillate in time, even though ∂L ...
... as its first two arguments. This way L will (in general) change in time even in the case where ∂L/∂t = 0, and of course if ∂L/∂t 6= 0 this can be yet another source of time dependence. • Consider (9) with a = 0: the oscillator will oscillate, and the value of L will oscillate in time, even though ∂L ...
Torque Analyses of a Sliding Ladder
... the product of the momentum of inertia about point A times the angular velocity θ̇ In general, the angular momentum of a rigid body with respect to a point equals the angular momentum of the center of mass motion with respect to that point, plus the angular momentum of the body relative to the cente ...
... the product of the momentum of inertia about point A times the angular velocity θ̇ In general, the angular momentum of a rigid body with respect to a point equals the angular momentum of the center of mass motion with respect to that point, plus the angular momentum of the body relative to the cente ...
California Physics Standard 1a Send comments to: layton@physics
... force required to accelerate the book to move from rest while accelerating a measured distance. (Simply applying s = ½ at2 will give an average acceleration). The results from this activity are not too accurate but the experience with such simple equipment can give rise to lots of discussions about ...
... force required to accelerate the book to move from rest while accelerating a measured distance. (Simply applying s = ½ at2 will give an average acceleration). The results from this activity are not too accurate but the experience with such simple equipment can give rise to lots of discussions about ...
torque
... way that a car will not have to rely on friction to round the curve without skidding. She does so by banking the road in such a way that the force causing the centripetal acceleration will be supplied by the component of the normal force toward the center of the circular path. Find the angle at whic ...
... way that a car will not have to rely on friction to round the curve without skidding. She does so by banking the road in such a way that the force causing the centripetal acceleration will be supplied by the component of the normal force toward the center of the circular path. Find the angle at whic ...
Unit 2.4
... Today we will visit Paula, the peach grower who wants to expand her peach orchard. In the established part of her orchard, there are 30 trees per acre with an average yield of 600 peaches per tree. Data from the local agricultural experiment station indicated that if Paula chose to plant more than 3 ...
... Today we will visit Paula, the peach grower who wants to expand her peach orchard. In the established part of her orchard, there are 30 trees per acre with an average yield of 600 peaches per tree. Data from the local agricultural experiment station indicated that if Paula chose to plant more than 3 ...
Chapter 7: Conservation of Mechanical Energy in Spring Problems
... The previous example involved essentially just one particle, the car. The wall was fixed there as a device for exerting a constant force during the collision. A more complex example can be studied when two particles collide. We first make the approximation that the two particles are subjected to no ...
... The previous example involved essentially just one particle, the car. The wall was fixed there as a device for exerting a constant force during the collision. A more complex example can be studied when two particles collide. We first make the approximation that the two particles are subjected to no ...
14-2 Kinetic Theory
... We will now apply some principles of physics we learned earlier in the book to help us to come to a fundamental understanding of temperature. Consider a cubical box, measuring L on each side. The box contains N identical atoms of a monatomic ideal gas, each of mass m. We will assume that all collisi ...
... We will now apply some principles of physics we learned earlier in the book to help us to come to a fundamental understanding of temperature. Consider a cubical box, measuring L on each side. The box contains N identical atoms of a monatomic ideal gas, each of mass m. We will assume that all collisi ...
Third Midterm Exam Solutions
... Problem 4 (20 points): A diver comes off a board with arms straight up and legs straight down, giving her a moment of inertia about her rotation axis of Ii = 18 kg·m2 . She then tucks into a small ball, decreasing this moment of inertia to If = 3.6 kg·m2 . While tucked, she makes two complete revol ...
... Problem 4 (20 points): A diver comes off a board with arms straight up and legs straight down, giving her a moment of inertia about her rotation axis of Ii = 18 kg·m2 . She then tucks into a small ball, decreasing this moment of inertia to If = 3.6 kg·m2 . While tucked, she makes two complete revol ...
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... it divides into 2 stages. The front stage is 250 kg and is ejected with a speed of 1250 m/s. What is the speed of the rear section of the rocket after separation? ...
... it divides into 2 stages. The front stage is 250 kg and is ejected with a speed of 1250 m/s. What is the speed of the rear section of the rocket after separation? ...
Physics 111 Practice Problems
... dropped from the same point at t = 100 ms. (a) How far below the release point is the center of mass of the two stones at t = 300 ms? (Neither stone has yet reached the ground.) (b) How fast is the center of mass of the two-stone system moving at that time? ...
... dropped from the same point at t = 100 ms. (a) How far below the release point is the center of mass of the two stones at t = 300 ms? (Neither stone has yet reached the ground.) (b) How fast is the center of mass of the two-stone system moving at that time? ...
1 - Net Start Class
... 7. A football is kicked into the air at an angle of 45 degrees with the horizontal. At the very top of the ball's path, its acceleration is _______. (Neglect the effects of air resistance.) 8. A football is kicked into the air at an angle of 45 degrees with the horizontal. At the very top of the ba ...
... 7. A football is kicked into the air at an angle of 45 degrees with the horizontal. At the very top of the ball's path, its acceleration is _______. (Neglect the effects of air resistance.) 8. A football is kicked into the air at an angle of 45 degrees with the horizontal. At the very top of the ba ...
Physics 2414 Group Exercise 12 Solutions Solutions Equilibrium of
... (a) In principle you can choose any point to be the axis about which you will calculate the torque. In our problem choosing point ‘B’ as the axis simplifies the algebra involved in the calculation, because more number of torques listed in eqn. (10) go to zero under this choice. (a.1) Which of the to ...
... (a) In principle you can choose any point to be the axis about which you will calculate the torque. In our problem choosing point ‘B’ as the axis simplifies the algebra involved in the calculation, because more number of torques listed in eqn. (10) go to zero under this choice. (a.1) Which of the to ...
