Chap7Class2
... (a) Determine the work a hiker must do on a 15.0-kg backpack to carry it up a hill of height h = 10.0 m, as shown. Determine also (b) the work done by gravity on the backpack, and (c) the net work done on the backpack. For simplicity, assume the motion is smooth and at constant velocity (i.e., accel ...
... (a) Determine the work a hiker must do on a 15.0-kg backpack to carry it up a hill of height h = 10.0 m, as shown. Determine also (b) the work done by gravity on the backpack, and (c) the net work done on the backpack. For simplicity, assume the motion is smooth and at constant velocity (i.e., accel ...
It`s Dynamic
... given time. Displacement, more specifically, refers to the length and direction of an object's path from its starting point to its ending point, hence its distance. We can look at velocity within an instant moment and over a span of time. Instantaneous velocity or instantaneous speed is the speed a ...
... given time. Displacement, more specifically, refers to the length and direction of an object's path from its starting point to its ending point, hence its distance. We can look at velocity within an instant moment and over a span of time. Instantaneous velocity or instantaneous speed is the speed a ...
3 3 Newton`s Second Law
... 8. A 20 kg box slides east across the floor with an initial velocity of 3.2 m/s, the box comes to a complete stop in a distance of 4.0 m. HINT: Friction is the only force there is no other applied force because the box is already moving. a. Draw a FBD, show all forces b. What is the force of fricti ...
... 8. A 20 kg box slides east across the floor with an initial velocity of 3.2 m/s, the box comes to a complete stop in a distance of 4.0 m. HINT: Friction is the only force there is no other applied force because the box is already moving. a. Draw a FBD, show all forces b. What is the force of fricti ...
Circular Motion
... A body is placed on a rotating turn table with one end of a string tied to the body and the other end is fixed at the centre of the turn table. Observer ‘A’ who is in inertial frame of reference finds that the body moves in a circle and the centripetal force necessary is provided by the tension in t ...
... A body is placed on a rotating turn table with one end of a string tied to the body and the other end is fixed at the centre of the turn table. Observer ‘A’ who is in inertial frame of reference finds that the body moves in a circle and the centripetal force necessary is provided by the tension in t ...
1 Newton`s Third Law
... Newton’s third law of motion states that every action has an equal and opposite reaction. This means that forces always act in pairs. First an action occurs, such as two skateboarders pushing together. Then a reaction occurs that is equal in strength to the action but in the opposite direction. In t ...
... Newton’s third law of motion states that every action has an equal and opposite reaction. This means that forces always act in pairs. First an action occurs, such as two skateboarders pushing together. Then a reaction occurs that is equal in strength to the action but in the opposite direction. In t ...
Quiz yourself concept checks
... planetary motion based on observations, but they contained no insight into why the planets orbited the Sun or why the orbits are as they are. Newtonian mechanics explained the orbits in terms of universal laws, and in addition made detailed predictions about the motion of other bodies in the cosmos— ...
... planetary motion based on observations, but they contained no insight into why the planets orbited the Sun or why the orbits are as they are. Newtonian mechanics explained the orbits in terms of universal laws, and in addition made detailed predictions about the motion of other bodies in the cosmos— ...
Homework 7 Solutions Ch. 28: #28 à 28)
... the magnitude of the force on a moving charged particle due a magnetic field is given by ...
... the magnitude of the force on a moving charged particle due a magnetic field is given by ...
what happens when an object changes direction
... classroom or outside on a smooth, flat area. If you let it roll, what kind of motion is it – straight line, circular, erratic? How does the ball change its motion if you hit it on the side with your hand or a club? Draw a conclusion about whether a force must be applied to the object while it moves ...
... classroom or outside on a smooth, flat area. If you let it roll, what kind of motion is it – straight line, circular, erratic? How does the ball change its motion if you hit it on the side with your hand or a club? Draw a conclusion about whether a force must be applied to the object while it moves ...
Monday, Sept. 22, 2008
... Newton’s First Law and Inertial Frames Aristotle (384-322BC): A natural state of a body is rest. Thus force is required to move an object. To move faster, ones needs larger forces. Galileo’s statement on natural states of matter: Any velocity once imparted to a moving body will be rigidly maintaine ...
... Newton’s First Law and Inertial Frames Aristotle (384-322BC): A natural state of a body is rest. Thus force is required to move an object. To move faster, ones needs larger forces. Galileo’s statement on natural states of matter: Any velocity once imparted to a moving body will be rigidly maintaine ...
Newton's theorem of revolving orbits
In classical mechanics, Newton's theorem of revolving orbits identifies the type of central force needed to multiply the angular speed of a particle by a factor k without affecting its radial motion (Figures 1 and 2). Newton applied his theorem to understanding the overall rotation of orbits (apsidal precession, Figure 3) that is observed for the Moon and planets. The term ""radial motion"" signifies the motion towards or away from the center of force, whereas the angular motion is perpendicular to the radial motion.Isaac Newton derived this theorem in Propositions 43–45 of Book I of his Philosophiæ Naturalis Principia Mathematica, first published in 1687. In Proposition 43, he showed that the added force must be a central force, one whose magnitude depends only upon the distance r between the particle and a point fixed in space (the center). In Proposition 44, he derived a formula for the force, showing that it was an inverse-cube force, one that varies as the inverse cube of r. In Proposition 45 Newton extended his theorem to arbitrary central forces by assuming that the particle moved in nearly circular orbit.As noted by astrophysicist Subrahmanyan Chandrasekhar in his 1995 commentary on Newton's Principia, this theorem remained largely unknown and undeveloped for over three centuries. Since 1997, the theorem has been studied by Donald Lynden-Bell and collaborators. Its first exact extension came in 2000 with the work of Mahomed and Vawda.