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What would have a higher terminal velocity a marble or a napkin?
The marble has lower drag so its terminal velocity would be greater. Each has its own terminal velocity.
What instrument helps you calculate the velocity of a human?
barometer
How do you calculate force when mass and velocity are given?
Force equals the mass times the rate of change of the velocity.
How do you calculate impact Energy for Pneumatic Hammers or how to calculate the Hammer piston velocity?
Hammer piston velocity is: Velocity of an pneumatic cylinder can be calculated as s = 28.8 q / A (1) where s = velocity (inches/sec) q = volume flow (cubic feet/min)A = piston area (square inches) Do you know how to calculate the impact PSI? - This is where I get lost.
How do you calculate drag coefficient when you are not given drag force?
Using empirical correlations such as the Dallavalle equation or a chart which plots Drag coefficient vs. Reynolds Number.
Can terminal velocity be changed?
Yes, if the falling object changes its aerodynamic profile, it can reduce or increase drag. Drag causes the terminal velocity to decrease.
Does wind affect velocity?
Yes, in the form of drag
Does tension change in a parachute?
Yes: The force acting down is constant (mass * g) The force acting up = velocity 2 * drag coefficient At chute opening, the velocity is at its maximum, so up force due to drag is at its maximum. (maximum tension) Drag force reducing with diminishing velocity, to landing terminal velocity (minimum tension)
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 does drag mean?
Drag coefficient can be defined as the ratio of the drag on a body moving through air to the prioduct of the velocity and the surface area of the body.
How does aircraft drag increase with speed?
Drag increases by the square of velocity increase, for example, tripling speed increases drag by a factor of nine!
How do you measure aerodynamic forces in a homemade wind tunnel?
you could use a spring behind your object, and calculate inline reaction force from deflection. it will be essential the wind speed is accurately measured force will represent wind velocity squared *drag coefficient , once calculated the drag coefficient can be used elsewhere, in acceleration calculations for instance. measuring forces versus wind speed should produce a exponential graph in the form f = v^2 as drag force is proportional to square of velocity if you translate the action into freefall , at terminal velocity the forces balance, down = mass * gravity acceleration ( newtons) up = velocity ^2 * drag coefficient (newtons)
How do calculate the velocity of the boat relative to the shore?
Add the rivers velocity to the boats velocity
Why do you need to calculate velocity instead of speed?
Speed and Velocity are two different things . Velocity- "the rate at which an object changes its position." Speed- "How fast an object is moving". To calculate speed and velocity, you first need to calculate distance and time. Velocity is considered to be a more logical term
What does drag coefficient mean?
Drag coefficient can be defined as the ratio of the drag on a body moving through air to the prioduct of the velocity and the surface area of the body.
How does wheel size effect velocity?
wheel size effects velocity by, way of drag and surface area that touches road or cement. the more drag or surface touching ground the slower you will move
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
