Questions - TTU Physics
... d. See Fig. 1. A hockey puck slides (to the right) at constant velocity v across a flat, horizontal, frictionless ice surface. Which of the sketches in the figure is the correct free body diagram for this puck? WHY? Explain your answer using Newton’s Laws! (Hint: Is there a force in the direction of ...
... d. See Fig. 1. A hockey puck slides (to the right) at constant velocity v across a flat, horizontal, frictionless ice surface. Which of the sketches in the figure is the correct free body diagram for this puck? WHY? Explain your answer using Newton’s Laws! (Hint: Is there a force in the direction of ...
PHYS 1443 – Section 501 Lecture #1
... Newton’s laws are valid only when observations are made in an inertial frame of reference. What happens in a non-inertial frame? Fictitious forces are needed to apply Newton’s second law in an accelerated frame. ...
... Newton’s laws are valid only when observations are made in an inertial frame of reference. What happens in a non-inertial frame? Fictitious forces are needed to apply Newton’s second law in an accelerated frame. ...
Lecture PowerPoints Chapter 5 Giancoli Physics: Principles with
... weightlessness. They do have a gravitational force acting on them, though! The satellite and all its contents are in free fall, so there is no normal force. This is what leads to the experience of weightlessness. ...
... weightlessness. They do have a gravitational force acting on them, though! The satellite and all its contents are in free fall, so there is no normal force. This is what leads to the experience of weightlessness. ...
Classical mechanics: conservation laws and gravity
... the atmosphere, causing it to accelerate upward. B. The backward momentum of the rocket exhaust is canceled by the forward momentum of the rocket. C. The escaping rocket exhaust changes the mass of the rocket, giving it upward momentum. D. The burning rocket fuel heats the air beneath the rocket, ca ...
... the atmosphere, causing it to accelerate upward. B. The backward momentum of the rocket exhaust is canceled by the forward momentum of the rocket. C. The escaping rocket exhaust changes the mass of the rocket, giving it upward momentum. D. The burning rocket fuel heats the air beneath the rocket, ca ...
Gravitation and Momentum
... • Tubby and his twin brother Chubby have a combined mass of 200.0kg and are zooming along in a 100.0kg amusement park bumper car at 10.0m/s. They bump Melinda’s car, which is sitting still. Melinda has a mass of 25.0kg. After the elastic collision, the twins continue ahead with a speed of 4.12m/s. H ...
... • Tubby and his twin brother Chubby have a combined mass of 200.0kg and are zooming along in a 100.0kg amusement park bumper car at 10.0m/s. They bump Melinda’s car, which is sitting still. Melinda has a mass of 25.0kg. After the elastic collision, the twins continue ahead with a speed of 4.12m/s. H ...
Advanced Higher Physics learning outcomes
... State that the gravitational potential at a point in a gravitational field is work done by external forces in bringing unit mass from infinity to that point. State that the zero of gravitational potential is taken to be at infinity. Carry out calculations involving the gravitational potential energy ...
... State that the gravitational potential at a point in a gravitational field is work done by external forces in bringing unit mass from infinity to that point. State that the zero of gravitational potential is taken to be at infinity. Carry out calculations involving the gravitational potential energy ...
AP Physics – Mechanics – Chapter 7-8
... Some would say it’s a centrifugal force pushing the iPhone out the window to the right as the car turns left. This is because the car is a NON-inertial (or accelerated) reference frame, and Newton’s first law of motion is only true for INERTIAL (constant velocity) reference frames. What is the real ...
... Some would say it’s a centrifugal force pushing the iPhone out the window to the right as the car turns left. This is because the car is a NON-inertial (or accelerated) reference frame, and Newton’s first law of motion is only true for INERTIAL (constant velocity) reference frames. What is the real ...
Motion and Potential Energy Graphs
... object downwards with acceleration g. As it does so it will lose potential energy P Eg and gain kinetic energy KE in such a way that its total mechanical energy ME remains constant. This motion can be deduced by looking at the potential-energy graph using the two concepts outlined above. Initially K ...
... object downwards with acceleration g. As it does so it will lose potential energy P Eg and gain kinetic energy KE in such a way that its total mechanical energy ME remains constant. This motion can be deduced by looking at the potential-energy graph using the two concepts outlined above. Initially K ...
physics - IIT Portal.com
... massless springs of spring constants K1 and K2 respectively. If the two bodies oscillate vertically such that maximum velocities are equal, the ratio of the amplitude of vibrations of M to that of N is ...
... massless springs of spring constants K1 and K2 respectively. If the two bodies oscillate vertically such that maximum velocities are equal, the ratio of the amplitude of vibrations of M to that of N is ...
Newton on K’s 3 Law, To Frame the World—30 Sept • Announcements
... • The force of the gravity of the sun is causing the direction of the motion to change. ...
... • The force of the gravity of the sun is causing the direction of the motion to change. ...
IIT Paper 2010 - auroraclasses.org
... When a particle of mass m moves on the x-axis in a potential of the form V(x) = kx2 it performs m simple harmonic motion. The corresponding time period is proportional to as can be seen k , easily using dimensional analysis. However, the motion of a particle can be periodic even when its potential e ...
... When a particle of mass m moves on the x-axis in a potential of the form V(x) = kx2 it performs m simple harmonic motion. The corresponding time period is proportional to as can be seen k , easily using dimensional analysis. However, the motion of a particle can be periodic even when its potential e ...
Mass versus weight
In everyday usage, the mass of an object is often referred to as its weight though these are in fact different concepts and quantities. In scientific contexts, mass refers loosely to the amount of ""matter"" in an object (though ""matter"" may be difficult to define), whereas weight refers to the force experienced by an object due to gravity. In other words, an object with a mass of 1.0 kilogram will weigh approximately 9.81 newtons (newton is the unit of force, while kilogram is the unit of mass) on the surface of the Earth (its mass multiplied by the gravitational field strength). Its weight will be less on Mars (where gravity is weaker), more on Saturn, and negligible in space when far from any significant source of gravity, but it will always have the same mass.Objects on the surface of the Earth have weight, although sometimes this weight is difficult to measure. An example is a small object floating in a pool of water (or even on a dish of water), which does not appear to have weight since it is buoyed by the water; but it is found to have its usual weight when it is added to water in a container which is entirely supported by and weighed on a scale. Thus, the ""weightless object"" floating in water actually transfers its weight to the bottom of the container (where the pressure increases). Similarly, a balloon has mass but may appear to have no weight or even negative weight, due to buoyancy in air. However the weight of the balloon and the gas inside it has merely been transferred to a large area of the Earth's surface, making the weight difficult to measure. The weight of a flying airplane is similarly distributed to the ground, but does not disappear. If the airplane is in level flight, the same weight-force is distributed to the surface of the Earth as when the plane was on the runway, but spread over a larger area.A better scientific definition of mass is its description as being composed of inertia, which basically is the resistance of an object being accelerated when acted on by an external force. Gravitational ""weight"" is the force created when a mass is acted upon by a gravitational field and the object is not allowed to free-fall, but is supported or retarded by a mechanical force, such as the surface of a planet. Such a force constitutes weight. This force can be added to by any other kind of force.For example, in the photograph, the girl's weight, subtracted from the tension in the chain (respectively the support force of the seat), yields the necessary centripetal force to keep her swinging in an arc. If one stands behind her at the bottom of her arc and abruptly stops her, the impetus (""bump"" or stopping-force) one experiences is due to acting against her inertia, and would be the same even if gravity were suddenly switched off.While the weight of an object varies in proportion to the strength of the gravitational field, its mass is constant (ignoring relativistic effects) as long as no energy or matter is added to the object. Accordingly, for an astronaut on a spacewalk in orbit (a free-fall), no effort is required to hold a communications satellite in front of him; it is ""weightless"". However, since objects in orbit retain their mass and inertia, an astronaut must exert ten times as much force to accelerate a 10‑ton satellite at the same rate as one with a mass of only 1 ton.On Earth, a swing set can demonstrate this relationship between force, mass, and acceleration. If one were to stand behind a large adult sitting stationary on a swing and give him a strong push, the adult would temporarily accelerate to a quite low speed, and then swing only a short distance before beginning to swing in the opposite direction. Applying the same impetus to a small child would produce a much greater speed.