Std. 12 Physics, MCQs
... The direction of centripetal force is same whether the rotation of the circular path is ...
... The direction of centripetal force is same whether the rotation of the circular path is ...
Semester 1 Final Jeopardy Review
... Calculate the area under the graph for the first 10 seconds. Area = 310 m/s*s or ...
... Calculate the area under the graph for the first 10 seconds. Area = 310 m/s*s or ...
... skate moving down the street at the same speed. The considerably greater mass of the Mack truck gives it a considerably greater momentum. If the Mack truck were at rest, which would have the greater momentum? If an object is at rest, the momentum of that object is “0” because there is no mass in ...
REFERENCES - mongolinternet.com
... Law of inertia: a body at rest or a body in motion continues to move at a constant velocity unless acted upon by an external force. Net external force F acting on a body gives it an acceleration a which is in the direction of the force and has magnitude inversely proportional to the mass m of the bo ...
... Law of inertia: a body at rest or a body in motion continues to move at a constant velocity unless acted upon by an external force. Net external force F acting on a body gives it an acceleration a which is in the direction of the force and has magnitude inversely proportional to the mass m of the bo ...
PHYSICS 2325 EXAM 2 REVIEW
... 4. When a wheel of radius R rotates about a fixed axis, a point R m from the center of the wheel moves a distance of 4.0 m. How far in m does a point at a distance R 2 from the center move in the same time? a. 0.25 b. 0.33 c. 0.50 d. 1.0 e. 2.0 ANS: e 12. After starting from rest with constant angu ...
... 4. When a wheel of radius R rotates about a fixed axis, a point R m from the center of the wheel moves a distance of 4.0 m. How far in m does a point at a distance R 2 from the center move in the same time? a. 0.25 b. 0.33 c. 0.50 d. 1.0 e. 2.0 ANS: e 12. After starting from rest with constant angu ...
Page 24 #10
... Notice that the vertical distance that the stone falls beneath the idealized straight-line paths is the same for equal times. This vertical distance is independent of what’s happening ...
... Notice that the vertical distance that the stone falls beneath the idealized straight-line paths is the same for equal times. This vertical distance is independent of what’s happening ...
Example 2
... •Neglect air resistance •Consider motion only after release and before it hits •Analyze the vertical and horizontal components separately (Galileo) •No acceleration in the horizontal, so velocity is constant •Acceleration in the vertical is – 9.8 m/s2 due to gravity and thus velocity is not constant ...
... •Neglect air resistance •Consider motion only after release and before it hits •Analyze the vertical and horizontal components separately (Galileo) •No acceleration in the horizontal, so velocity is constant •Acceleration in the vertical is – 9.8 m/s2 due to gravity and thus velocity is not constant ...
Physics v. 2016
... Power- the rate at which work is done, or the rate at which energy is transferred; Work- The product of force and displacement; Work Energy Theorem- The net work done on an object will equal the object’s change in kinetic energy ...
... Power- the rate at which work is done, or the rate at which energy is transferred; Work- The product of force and displacement; Work Energy Theorem- The net work done on an object will equal the object’s change in kinetic energy ...
Physics
... B—kinetic energy is zero only when v = 0 p = mv = 0 12. A system of particles has total momentum of zero. Does it necessarily follow that the total kinetic energy is zero? (A) yes (B) no B—momentum is a vector quantity, a system of particles could be moving, but in opposite directions 13. Two obje ...
... B—kinetic energy is zero only when v = 0 p = mv = 0 12. A system of particles has total momentum of zero. Does it necessarily follow that the total kinetic energy is zero? (A) yes (B) no B—momentum is a vector quantity, a system of particles could be moving, but in opposite directions 13. Two obje ...
Chapter 7: Motion in a Circle
... A particle moves around a circle clockwise at a constant speed for 2.0 s. It then reverses direction and moves counterclockwise at half the original speed until it has traveled through the same angle. Which is the particle’s angle-versustime graph? ...
... A particle moves around a circle clockwise at a constant speed for 2.0 s. It then reverses direction and moves counterclockwise at half the original speed until it has traveled through the same angle. Which is the particle’s angle-versustime graph? ...
Classical central-force problem
In classical mechanics, the central-force problem is to determine the motion of a particle under the influence of a single central force. A central force is a force that points from the particle directly towards (or directly away from) a fixed point in space, the center, and whose magnitude only depends on the distance of the object to the center. In many important cases, the problem can be solved analytically, i.e., in terms of well-studied functions such as trigonometric functions.The solution of this problem is important to classical physics, since many naturally occurring forces are central. Examples include gravity and electromagnetism as described by Newton's law of universal gravitation and Coulomb's law, respectively. The problem is also important because some more complicated problems in classical physics (such as the two-body problem with forces along the line connecting the two bodies) can be reduced to a central-force problem. Finally, the solution to the central-force problem often makes a good initial approximation of the true motion, as in calculating the motion of the planets in the Solar System.