Tue Aug 31 - LSU Physics
... • Gravitational force: magnitude = mg, always vertical, pointing down. • sometimes does positive work, sometimes negative work. • Normal force: magnitude =whatever is needed for the objects not to penetrate surface; always perpendicular to surface. • never does any work !! • Friction force: mag ...
... • Gravitational force: magnitude = mg, always vertical, pointing down. • sometimes does positive work, sometimes negative work. • Normal force: magnitude =whatever is needed for the objects not to penetrate surface; always perpendicular to surface. • never does any work !! • Friction force: mag ...
Physics_AP_A_Evans_Day_39_Period_4
... • If the force and displacement are in the same direction, work is positive (cos 0º = 1) • If the force and displacement are in opposite directions, work is negative (cos 180º = –1) • If work and displacement are perpendicular, work is zero. • Be sure and note the force which does the work (ex. Appl ...
... • If the force and displacement are in the same direction, work is positive (cos 0º = 1) • If the force and displacement are in opposite directions, work is negative (cos 180º = –1) • If work and displacement are perpendicular, work is zero. • Be sure and note the force which does the work (ex. Appl ...
Chapter 20 - Cloudfront.net
... different weights from the Leaning Tower of Pisa Found that all objects fall at the same rate if you can account for air resistance ...
... different weights from the Leaning Tower of Pisa Found that all objects fall at the same rate if you can account for air resistance ...
Chapter 8: Rotational Motion
... A turntable rotating at 33 1/3 rev/min is shut off. It brakes with a constant angular acceleration and comes to rest in 2.0 min. (a) Find the angular acceleration. (b) What is the average angular velocity of the turntable? (c) How many revolutions does it make before stopping? a.) -16.7 rev/min2 b.) ...
... A turntable rotating at 33 1/3 rev/min is shut off. It brakes with a constant angular acceleration and comes to rest in 2.0 min. (a) Find the angular acceleration. (b) What is the average angular velocity of the turntable? (c) How many revolutions does it make before stopping? a.) -16.7 rev/min2 b.) ...
Ch. 2-3
... 2. Newton was the first to discover the notion of _________ or an object’s resistance to motion. 3. During free fall an object accelerates toward the Earth at this rate: __________ 4. Velocity differs from speed in that velocity has a ___________. 5. Newton’s Second Law states the acceleration is __ ...
... 2. Newton was the first to discover the notion of _________ or an object’s resistance to motion. 3. During free fall an object accelerates toward the Earth at this rate: __________ 4. Velocity differs from speed in that velocity has a ___________. 5. Newton’s Second Law states the acceleration is __ ...
Physics - CSUN.edu
... circular motion requires application of a constant force directed toward the center of the circle. h.* ...
... circular motion requires application of a constant force directed toward the center of the circle. h.* ...
Physics C Test January 2011
... d. always the same but >1 e. depends on the season 18. Compute the work done by a force F = 2i – 3j +5k (where all constants are in Newtons) in moving a 5 kg object from a point (0, 1m, 2m) to a point (5m, 2m, -4m). a. 0 b. 16 J c. -16 J d. 23 J e. – 23 J For questions #19 and 20, use the following ...
... d. always the same but >1 e. depends on the season 18. Compute the work done by a force F = 2i – 3j +5k (where all constants are in Newtons) in moving a 5 kg object from a point (0, 1m, 2m) to a point (5m, 2m, -4m). a. 0 b. 16 J c. -16 J d. 23 J e. – 23 J For questions #19 and 20, use the following ...
Chapter 13 Notes
... Force = Mass Acceleration Acceleration = Force Mass Mass = Force Acceleration b. Acceleration is the rate at which the velocity of an object changes over time. Newton’s Third Law a. When one object exerts a force on a second object, the second object exerts a force on the first object; action- ...
... Force = Mass Acceleration Acceleration = Force Mass Mass = Force Acceleration b. Acceleration is the rate at which the velocity of an object changes over time. Newton’s Third Law a. When one object exerts a force on a second object, the second object exerts a force on the first object; action- ...
Four Energy Problems In this note I give the math behind various
... long as w is not zero. Thus in this highly simplified scenario it is always more work to ride in the wind. When the wind blows from the side, as it always will at some point because real routes are not perfectly straight, we need to put in the directions which complicates things, and I will not go i ...
... long as w is not zero. Thus in this highly simplified scenario it is always more work to ride in the wind. When the wind blows from the side, as it always will at some point because real routes are not perfectly straight, we need to put in the directions which complicates things, and I will not go i ...
Kinetic and Potential Energy
... This sum is known as the total mechanical energy of a system – in the absence of friction this value does not change. ...
... This sum is known as the total mechanical energy of a system – in the absence of friction this value does not change. ...
A P COURSE AUDIT
... Can you predict the mass of the spring? 10. Find the velocity of the projectile by two methods. Newton’s 2 nd law and projectile motion and by using ballistic pendulum where, law of conservation of energy and momentum will be used. Discuss the reasons why the values of speed are different in two met ...
... Can you predict the mass of the spring? 10. Find the velocity of the projectile by two methods. Newton’s 2 nd law and projectile motion and by using ballistic pendulum where, law of conservation of energy and momentum will be used. Discuss the reasons why the values of speed are different in two met ...
Practice TEST
... bowling balls and Mrs. Matlock who is driving a sports utility vehicle with a large mass Buick Rendezvous is also carrying 4 crates of bowling balls. If both are traveling with the same velocity, then which one has more kinetic energy and why? Explain. ...
... bowling balls and Mrs. Matlock who is driving a sports utility vehicle with a large mass Buick Rendezvous is also carrying 4 crates of bowling balls. If both are traveling with the same velocity, then which one has more kinetic energy and why? Explain. ...
Document
... What are forces on book? W • Weight is downward • System is “in equilibrium” (acceleration = 0 net force = 0) • Therefore, weight balanced by another force • FN = “normal force” = force exerted by surface on object • FN is always perpendicular to surface and outward • For this example FN = W ...
... What are forces on book? W • Weight is downward • System is “in equilibrium” (acceleration = 0 net force = 0) • Therefore, weight balanced by another force • FN = “normal force” = force exerted by surface on object • FN is always perpendicular to surface and outward • For this example FN = W ...
HW#5a Page 1 of 4 For circular motion, we know that the total force
... (c) And how about if m2 = 0? Then a = 0. No force pulling downwards. (d) It would be hard for m1 not to be dragged along by m2. But if there was enough static friction, that could hold the two of them stationary. Notice: assume the table is long enough, as long as m2>0, the net force on m1 will not ...
... (c) And how about if m2 = 0? Then a = 0. No force pulling downwards. (d) It would be hard for m1 not to be dragged along by m2. But if there was enough static friction, that could hold the two of them stationary. Notice: assume the table is long enough, as long as m2>0, the net force on m1 will not ...
Hunting oscillation
Hunting oscillation is a self-oscillation, usually unwanted, about an equilibrium. The expression came into use in the 19th century and describes how a system ""hunts"" for equilibrium. The expression is used to describe phenomena in such diverse fields as electronics, aviation, biology, and railway engineering.