Honor`s Physics Chapter 5 Notes
... The direction of this force is toward the center of the circle and is therefore constant changing direction. The centripetal force is the external force required to make a body follow a curved path. Hence centripetal force is a kinematic force requirement, not a particular kind of force like gravit ...
... The direction of this force is toward the center of the circle and is therefore constant changing direction. The centripetal force is the external force required to make a body follow a curved path. Hence centripetal force is a kinematic force requirement, not a particular kind of force like gravit ...
Newton`s Second Law Spring/Mass Systems: Free Undamped
... pounds stretches a spring ½ foot, then 14 = k(1/2) and k = 28 lbs/ft. Before proceed to Newton’s Second Law, we define the weight, W = mg where mass is measured in slugs, grams, or kilograms. For example, g = 32 ft. /s2 or 9.8 m / s2 or 980 cm / s2. ...
... pounds stretches a spring ½ foot, then 14 = k(1/2) and k = 28 lbs/ft. Before proceed to Newton’s Second Law, we define the weight, W = mg where mass is measured in slugs, grams, or kilograms. For example, g = 32 ft. /s2 or 9.8 m / s2 or 980 cm / s2. ...
Name
... If two students each push a box with a force of 5 N in opposite directions, and there is no other unbalanced force on the box, what is the magnitude of the net force exerted on the box? ...
... If two students each push a box with a force of 5 N in opposite directions, and there is no other unbalanced force on the box, what is the magnitude of the net force exerted on the box? ...
Mass Spectrometry
... chromatogram (TIC) obtained. A TIC is the GC-MS equivalent of a gas chromatogram. The MS then allows identification of the components without having to rely on a comparison of retention times. ...
... chromatogram (TIC) obtained. A TIC is the GC-MS equivalent of a gas chromatogram. The MS then allows identification of the components without having to rely on a comparison of retention times. ...
Centripetal Force and Projectiles
... If r gets bigger, the force will get smaller If r gets smaller, the force will get bigger ...
... If r gets bigger, the force will get smaller If r gets smaller, the force will get bigger ...
Chapter 11 Test
... Completion Complete each statement with a word from the “Word Choices.” Word Choices: Momentum Force Mass Velocity Acceleration Inertia Less Greater 18. Mass times velocity equals ____________________. 19. According to Newton’s second law of motion, force is the product of ____________________ and _ ...
... Completion Complete each statement with a word from the “Word Choices.” Word Choices: Momentum Force Mass Velocity Acceleration Inertia Less Greater 18. Mass times velocity equals ____________________. 19. According to Newton’s second law of motion, force is the product of ____________________ and _ ...
NEWTON`S LAWS OF MOTION
... 1. Identify all forces acting on the object -Pushes or Pulls -Frictional forces -Tension in a string -Gravitational Force (or weight = mg where g is 9.8 m/s2) - “Normal forces” (one object touching another). 2. Draw a “Freebody Diagram” -draw the object, show all forces acting on that object as vect ...
... 1. Identify all forces acting on the object -Pushes or Pulls -Frictional forces -Tension in a string -Gravitational Force (or weight = mg where g is 9.8 m/s2) - “Normal forces” (one object touching another). 2. Draw a “Freebody Diagram” -draw the object, show all forces acting on that object as vect ...
exercises1
... C8) A homogeneous sphere of radius r = 20 cm and density δ = 3 g / cm is in equilibrium fixed to a wall as shown in the figure. That form the rope angle with the wall? Determine, in addition, the tension T of ...
... C8) A homogeneous sphere of radius r = 20 cm and density δ = 3 g / cm is in equilibrium fixed to a wall as shown in the figure. That form the rope angle with the wall? Determine, in addition, the tension T of ...
Name - MIT
... 39) If the Earth were moved to a distance of 3 astronomical units from the Sun, how much stronger or weaker would be the gravitational force between the Sun and Earth ? A) The force would be 3 times stronger. B) The force would be 9 times stronger. C) The force would be unchanged. D) The force would ...
... 39) If the Earth were moved to a distance of 3 astronomical units from the Sun, how much stronger or weaker would be the gravitational force between the Sun and Earth ? A) The force would be 3 times stronger. B) The force would be 9 times stronger. C) The force would be unchanged. D) The force would ...
Name
... 39) Galileo supposedly dropped balls of different masses from the leaning tower of Pisa. If he dropped a steel ball with a mass of 5 kg and wooden ball with a mass of 1 kg, which of the following would describe what happens? A) The force on the steel ball is greater so the steel ball would hit the g ...
... 39) Galileo supposedly dropped balls of different masses from the leaning tower of Pisa. If he dropped a steel ball with a mass of 5 kg and wooden ball with a mass of 1 kg, which of the following would describe what happens? A) The force on the steel ball is greater so the steel ball would hit the g ...
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.