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What is the average value of coefficient of velocity in a submerged orifice?
The average value of the coefficient of velocity for a submerged orifice is typically around 0.97 to 0.99. This value represents the efficiency of the orifice in converting the potential energy of the fluid into kinetic energy.
How can one determine the coefficient of restitution in a physics experiment?
To determine the coefficient of restitution in a physics experiment, one can measure the initial and final velocities of an object before and after a collision. The coefficient of restitution is calculated by dividing the relative velocity of separation by the relative velocity of approach. This value represents the ratio of the final velocity of separation to the initial velocity of approach, providing insight into the elasticity of the collision.
What does friction have to do with skydiving?
It determines your terminal velocity, depending on your drag coefficient.
How do you calculate rebound from momentum?
Rebound can be calculated by using the coefficient of restitution (e) in the momentum formula. The formula for calculating rebound is R = e * Vf, where R is the rebound velocity, e is the coefficient of restitution, and Vf is the final velocity of the object after collision.
What does lift and stag mean in a rocket?
LIft = coefficient times density times velocity squared times wing area divided by 2 drag= coefficient times density times velocity squared over 2 times reference area
What is the lift coefficient of a cylinder?
It depends on the Reduced Velocity and amplitude of oscillation. Lift Coefficient could be as high as 1.0, and as low as -10.0 at very low reduced velocities.
What force exert by parachutes?
Drop any object from a plane and the downward force due to the mass will eventually be matched by an upward force due to air resistance (terminal velocity). This terminal velocity depends on the objects drag coefficient, what the parachute does is present a drag coefficient sufficient to give the required terminal velocity for landing . > You need no more than say 6 metres / second landing velocity, effectively this is the terminal velocity with the chute open. Using body mass of 80 kg and acceleration due to gravity of 10 (m/s)/s, this gives a downward force of ( 80 * 10 ) 800 newtons. To balance this at landing velocity, you need a drag coefficient calculated from: 800 = velocity2 * drag coefficient , so: drag coefficient = 800 / velocity2 = 22.22 > Compare this to the pre chute deployment velocity of around 80 metres / second, giving a drag coefficient of: drag coefficient = 800 / 6400 = 0.125
How do you calculate the damping coefficient in a system?
The damping coefficient in a system can be calculated by dividing the damping force by the velocity of the system. This helps determine how much the system resists oscillations and vibrations.
What is the equation thast describes how air resistance affects terminal velocity?
down and up forces balance at terminal velocitymass * g = v^2 * drag coefficientif mass and terminal velocity are known , drag coefficient can be foundsay mass = 100 kg, g = 9.8 (m/s)/s, terminal velocity = 70 m/sso at terminal velocity:100*9.8=4900* drag coefficientthen:100*9.8/4900 = 0.2 (drag coefficient)if you reduce the drag coefficient, the terminal velocity will increase, until the forces balance
What is the unit of damping co efficient?
The unit of damping coefficient is Ns/m, which represents the force required to bring a unit velocity proportional to the damping coefficient to a stop in a unit distance.
What is the coefficient of friction in a 6 inch round duct with a velocity of 200cfm?
The coefficient of friction for air flow in a round duct is typically around 0.02. This coefficient may vary depending on factors such as surface roughness and airflow conditions.
Why is it easier to determine the coefficient of kinetic friction if the object moves with a constant velocity?
When an object is moving at a constant velocity, it means that the forces acting on it are balanced. In this case, the force of kinetic friction is equal and opposite to the applied force, making it easier to calculate the coefficient of kinetic friction using the known values of force and normal force.
