PHE-01 (2007)
... (b) A bacteria of mass 2 1024 kg is rotated in a centrifuge at an angular speed of 4 103 rad s1. It is situated at a distance of 5 cm from the axis of rotation. Calculate the effective value of g relative to the rotating frame of reference and the net centrifugal force on the bacteria. ...
... (b) A bacteria of mass 2 1024 kg is rotated in a centrifuge at an angular speed of 4 103 rad s1. It is situated at a distance of 5 cm from the axis of rotation. Calculate the effective value of g relative to the rotating frame of reference and the net centrifugal force on the bacteria. ...
File
... external forces is zero and when the sum of the external torques is zero. In other words…∑τ = 0 Hint: When acceleration is zero the net force and in the case of rotational motion, net torque is zero. Remember the lever arm must be determined relative to the axis of rotation. In problem solving, choo ...
... external forces is zero and when the sum of the external torques is zero. In other words…∑τ = 0 Hint: When acceleration is zero the net force and in the case of rotational motion, net torque is zero. Remember the lever arm must be determined relative to the axis of rotation. In problem solving, choo ...
Circular Motion
... whirled in a vertical circle of should possess at the lowest point in order to just loop the vertical circle. A/Q to radius r. let v1 and v2 be the principle of conservation of energy, velocities of the body and T and T be tensions in the string K.E. of the body at point A =(P.E. +K.E.) of the body ...
... whirled in a vertical circle of should possess at the lowest point in order to just loop the vertical circle. A/Q to radius r. let v1 and v2 be the principle of conservation of energy, velocities of the body and T and T be tensions in the string K.E. of the body at point A =(P.E. +K.E.) of the body ...
rotational inertia
... An object tends to rotate around the center of gravity as if it were a stationary point. – It is the balance point that supports the entire object. – The center of gravity can also exhist where there is no material at all. For example a hollow sphere has the center of gravity at its geometric center ...
... An object tends to rotate around the center of gravity as if it were a stationary point. – It is the balance point that supports the entire object. – The center of gravity can also exhist where there is no material at all. For example a hollow sphere has the center of gravity at its geometric center ...
template
... 4. While descending in the elevator, the cable suddenly breaks. What is the force of the floor on the man? Since there is no force opposing free-fall, the normal force is zero Newtons 5. Consider the situation where a person that has a mass of 68 kg is descending in an elevator at a constant veloci ...
... 4. While descending in the elevator, the cable suddenly breaks. What is the force of the floor on the man? Since there is no force opposing free-fall, the normal force is zero Newtons 5. Consider the situation where a person that has a mass of 68 kg is descending in an elevator at a constant veloci ...
AP Physics D: Mechanics Midterm Review Problems
... 9. The two blocks are connected by a light string that passes over a frictionless pulley with a negligible mass. The block of mass m1 lies on a rough horizontal surface with a constant coefficient of kinetic friction μ. This block is connected to a spring with spring constant k. The second block ha ...
... 9. The two blocks are connected by a light string that passes over a frictionless pulley with a negligible mass. The block of mass m1 lies on a rough horizontal surface with a constant coefficient of kinetic friction μ. This block is connected to a spring with spring constant k. The second block ha ...
Lecture powerpoint
... Mass An unconstrained object (i.e., one not on an axle or a pivot) on which there is no net force rotates about a point called the center of mass. The center of mass remains motionless while every other point in the object undergoes circular motion around it. ...
... Mass An unconstrained object (i.e., one not on an axle or a pivot) on which there is no net force rotates about a point called the center of mass. The center of mass remains motionless while every other point in the object undergoes circular motion around it. ...
ch. 5 and 6 - Cobb Learning
... b. sliding kinetic friction c. rolling kinetic friction d. gravitational friction ...
... b. sliding kinetic friction c. rolling kinetic friction d. gravitational friction ...
Josh`s physics kinematics outline
... Objects that are shot through the air are called projectiles. Each projectile follows a certain trajectory. If you know the initial thrust that the object received, you can calculate the trajectory. To calculate the trajectory, you must break the vector of the projectile into its horizontal and vert ...
... Objects that are shot through the air are called projectiles. Each projectile follows a certain trajectory. If you know the initial thrust that the object received, you can calculate the trajectory. To calculate the trajectory, you must break the vector of the projectile into its horizontal and vert ...
Chapter 7 Study Guide: Forces Focus on the highlighted terms and
... friction-the force that one surface exerts on another when the two rub against each other is called mass-the amount of matter in an object is called its gravity-the force that pulls objects towards each other; pulls falling objects toward Earth weight-the force of gravity on a person or object on th ...
... friction-the force that one surface exerts on another when the two rub against each other is called mass-the amount of matter in an object is called its gravity-the force that pulls objects towards each other; pulls falling objects toward Earth weight-the force of gravity on a person or object on th ...
Physical Science
... grass with a 100N force of friction. What will Patty’s acceleration be this time? (Hint: sketch a diagram first) ...
... grass with a 100N force of friction. What will Patty’s acceleration be this time? (Hint: sketch a diagram first) ...
net force
... • It is the law which explains how things move • If a net force is applied to an object it will accelerate – change its velocity • It includes the law of inertia if there is no force F = 0, then accel = 0 the velocity doesn’t change no force is needed to keep an object moving with constant vel ...
... • It is the law which explains how things move • If a net force is applied to an object it will accelerate – change its velocity • It includes the law of inertia if there is no force F = 0, then accel = 0 the velocity doesn’t change no force is needed to keep an object moving with constant vel ...
backup of mechanics..
... stated in text books. Inertia can’t be measured. What one is conscious of when accelerating a body is its inertial force acting back on you or the agent doing the acceleration. Inertial force is given by: F ma Force is not mass. Just as mass is not weight in the gravitational situation. Force vari ...
... stated in text books. Inertia can’t be measured. What one is conscious of when accelerating a body is its inertial force acting back on you or the agent doing the acceleration. Inertial force is given by: F ma Force is not mass. Just as mass is not weight in the gravitational situation. Force vari ...
HOMEWORK – DUE FRIDAY, NOVEMBER 22ND NEWTON`S
... The ball will stop at the line halfway across the gym. B. The ball will continue to roll until an unbalanced force is applied. C. The ball will start bouncing until it hits the wall. D. The ball will roll in a zigzag pattern to the other end of the gym. 2. A person walks out of a store with a pillow ...
... The ball will stop at the line halfway across the gym. B. The ball will continue to roll until an unbalanced force is applied. C. The ball will start bouncing until it hits the wall. D. The ball will roll in a zigzag pattern to the other end of the gym. 2. A person walks out of a store with a pillow ...
Document
... How do you determine the acceleration of an object that is NOT changing its speed, but is changing its direction? ...
... How do you determine the acceleration of an object that is NOT changing its speed, but is changing its direction? ...