TUTORIAL 4 WORK, ENERGY AND POWER An escalator is used to
... 8. A spring is extended by 5 cm when it is stretched by an external force of 1 N. If the spring is extended by 10 cm, what is the elastic potential energy stored in the spring? 9. A 1.5 x 103 kg car needs to pass a slow moving lorry. The velocity of a car changes from 15.2 m s-1 to 19.5 m s-1 in 3.5 ...
... 8. A spring is extended by 5 cm when it is stretched by an external force of 1 N. If the spring is extended by 10 cm, what is the elastic potential energy stored in the spring? 9. A 1.5 x 103 kg car needs to pass a slow moving lorry. The velocity of a car changes from 15.2 m s-1 to 19.5 m s-1 in 3.5 ...
Lecture 6.Forces
... A) more than its weight B) equal to its weight C) less than its weight but more than zero D) depends on the speed of the puck E) zero ...
... A) more than its weight B) equal to its weight C) less than its weight but more than zero D) depends on the speed of the puck E) zero ...
Lecture1_Inertia
... An object subject to a constant net external force will D. move with increasing speed. If any unbalanced force can start an object moving…then a continuously applied force can only make it move faster and faster. People are confused when friction is high enough that an object slows to rest shortly a ...
... An object subject to a constant net external force will D. move with increasing speed. If any unbalanced force can start an object moving…then a continuously applied force can only make it move faster and faster. People are confused when friction is high enough that an object slows to rest shortly a ...
Work and Energy_ppt_RevW10
... • First Law: Objects continue their state of motion (rest or constant velocity) unless acted upon by a net external force. • Second Law: The action of a net external force on an object is to cause its momentum to change with time. For objects with a constant mass this can be written as F = ma. • Thi ...
... • First Law: Objects continue their state of motion (rest or constant velocity) unless acted upon by a net external force. • Second Law: The action of a net external force on an object is to cause its momentum to change with time. For objects with a constant mass this can be written as F = ma. • Thi ...
5-4 Forces and Circular Motion
... 5-2 Friction •Kinetic frictional force is somewhat smaller than static, so that when object begins to move it accelerates if force stays constant. • Otherwise can lessen force to maintain constant speed. ...
... 5-2 Friction •Kinetic frictional force is somewhat smaller than static, so that when object begins to move it accelerates if force stays constant. • Otherwise can lessen force to maintain constant speed. ...
1200 kg ( 9.8 m/s^2)
... of 1.5 m. The other end of the string is tied to a rigid support. The ball is held straight out horizontally from the point of support, with the string taught and is then released. What is the maximum potential energy that the ball can have (with respect to its lowest point)? ...
... of 1.5 m. The other end of the string is tied to a rigid support. The ball is held straight out horizontally from the point of support, with the string taught and is then released. What is the maximum potential energy that the ball can have (with respect to its lowest point)? ...
Intro Forces and Newton`s 3 Laws
... What would happen if there weren’t unbalanced forces? Would the box ever stop?… ...
... What would happen if there weren’t unbalanced forces? Would the box ever stop?… ...
CH. 6 Sec. 2
... NEWTON’S SECOND LAW OF MOTION Part 1: Acceleration Depends on Mass Circle the letter of the best answer for each question. ...
... NEWTON’S SECOND LAW OF MOTION Part 1: Acceleration Depends on Mass Circle the letter of the best answer for each question. ...
Energy, Kinetic Energy, Work, Dot Product, and
... under the action of a variable force F(x), which is shown in the figure. What is the particle's kinetic energy at x=L/2 and at x=L? (1) (Fmax)(L/2), (Fmax)(L) (2) (Fmax)(L/4), 0 (3) (Fmax)(L), 0 (4) (Fmax)(L/4), (Fmax)(L/2) (5) (Fmax)(L/2), (Fmax)(L/4) ...
... under the action of a variable force F(x), which is shown in the figure. What is the particle's kinetic energy at x=L/2 and at x=L? (1) (Fmax)(L/2), (Fmax)(L) (2) (Fmax)(L/4), 0 (3) (Fmax)(L), 0 (4) (Fmax)(L/4), (Fmax)(L/2) (5) (Fmax)(L/2), (Fmax)(L/4) ...
Sample Final Exam Physics 131 Spring 2009
... C) No force is needed to keep the object’s velocity constant because the object contains a natural force of motion. D) The object will keep moving at constant velocity as long as its acceleration is greater than zero. E) None of the above. ...
... C) No force is needed to keep the object’s velocity constant because the object contains a natural force of motion. D) The object will keep moving at constant velocity as long as its acceleration is greater than zero. E) None of the above. ...
Newton`s 3rd Law
... Objects in motion tend to stay in motion and objects at rest tend to stay at rest unless acted upon by an unbalanced force. Newton’s Second Law: Force equals mass times acceleration (F = ma). Newton’s Third Law: For every action there is an equal and opposite reaction. ...
... Objects in motion tend to stay in motion and objects at rest tend to stay at rest unless acted upon by an unbalanced force. Newton’s Second Law: Force equals mass times acceleration (F = ma). Newton’s Third Law: For every action there is an equal and opposite reaction. ...
SAMPLE TEST 1: PHYSICS 103
... For anything moving at constant acceleration, the position can be found using: d = d0 + vo . t + ½ a.t2 where d is the final position after time t, d0 is the initial position, t is the time, a is the acceleration, and vo is the initial velocity For anything moving at constant acceleration, the final ...
... For anything moving at constant acceleration, the position can be found using: d = d0 + vo . t + ½ a.t2 where d is the final position after time t, d0 is the initial position, t is the time, a is the acceleration, and vo is the initial velocity For anything moving at constant acceleration, the final ...
Newton`s Laws and Motion
... A runner follows a path through a park and goes 3 kilometers north, turns right, and travels 4 kilometers east. The total distance traveled is 7 kilometers, but her final position is only 5 kilometers northeast of her starting point. So her displacement is 5 kilometers northeast. ...
... A runner follows a path through a park and goes 3 kilometers north, turns right, and travels 4 kilometers east. The total distance traveled is 7 kilometers, but her final position is only 5 kilometers northeast of her starting point. So her displacement is 5 kilometers northeast. ...
PPT
... Newton's 1st Law - An object at rest, or in uniform straight line motion, will remain at rest, or in uniform straight line motion, unless acted upon by a net external force. Another way to state this law might be: If there are no net external forces acting on a body, then it will continue in it's st ...
... Newton's 1st Law - An object at rest, or in uniform straight line motion, will remain at rest, or in uniform straight line motion, unless acted upon by a net external force. Another way to state this law might be: If there are no net external forces acting on a body, then it will continue in it's st ...
AM Class -I - Directorate General of Shipping
... young modulus of elasticity for wire, obtain the frequency of oscillation for simple harmonic motion along the vertical line. 6. In the figure of the rotary viscometer, if the clearance at the bottom is also r, find the total torque on the inner cylinder. Angular velocity of outer cylinder is . ...
... young modulus of elasticity for wire, obtain the frequency of oscillation for simple harmonic motion along the vertical line. 6. In the figure of the rotary viscometer, if the clearance at the bottom is also r, find the total torque on the inner cylinder. Angular velocity of outer cylinder is . ...
06 Newton`s Laws of Motion
... Newton’s 2nd Law of Motion – Gravity Diagram Assuming that the position of a free-falling ball dropped from a position of rest is shown every 1 second, the velocity of the ball shown to increases as the time increases. What relationship do you notice about the distance per every 1 second? ...
... Newton’s 2nd Law of Motion – Gravity Diagram Assuming that the position of a free-falling ball dropped from a position of rest is shown every 1 second, the velocity of the ball shown to increases as the time increases. What relationship do you notice about the distance per every 1 second? ...
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.