The coefficient of friction is an empirical measurement and has to be measured experimentally, and cannot be found through calculations. Rougher surfaces tend to have higher effective values. Most dry materials in combination have friction coefficient values between 0.3 and 0.6. Values outside this range are rarer, but Teflon, for example, can have a coefficient as low as 0.04. Therefore, a value of zero would mean no friction at all, an ELUSIVE property even magnetic levitation vehicles have drag.
No , coefficient of friction can not be zero. if it is zero then there will be no frictional force between two bodies.And in our universe these types of object didnot exit.
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
No, the coefficient of friction cannot be zero because some level of resistance is always present when two surfaces come into contact with each other.
Invar is a material that has a nearly zero temperature coefficient, meaning its dimensions do not significantly change with fluctuations in temperature. This makes it valuable for applications where dimensional stability is critical, such as in precision instruments and scientific equipment.
coefficient of drag in 0 lift
For no lift, The induced drag will be zero. However, there will still be drag due to viscous forces and pressure forces.
0.032
The zero lift drag coefficient (C_D0) for the Airbus A340 is typically around 0.025 to 0.030. This value represents the drag experienced by the aircraft when it is not generating lift, primarily due to factors such as skin friction and form drag. Exact values can vary based on specific configurations and conditions, but this range is commonly referenced in aerodynamic studies for the A340.
17.4
A correlation coefficient of zero means that two things are not correlated to each other.
Yes it is. If all the observations have the same non-zero value then the coefficient of variation will be zero.
if coefficient of skewness is zero then distribution is symmetric or zero skewed.
A coefficient of zero means there is no correlation between two variables. A coefficient of -1 indicates strong negative correlation, while +1 suggests strong positive correlation.
The coefficient of friction is an empirical measurement and has to be measured experimentally, and cannot be found through calculations. Rougher surfaces tend to have higher effective values. Most dry materials in combination have friction coefficient values between 0.3 and 0.6. Values outside this range are rarer, but Teflon, for example, can have a coefficient as low as 0.04. Therefore, a value of zero would mean no friction at all, an ELUSIVE property even magnetic levitation vehicles have drag.
No , coefficient of friction can not be zero. if it is zero then there will be no frictional force between two bodies.And in our universe these types of object didnot exit.
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