Homework Statement
If the random variables T and U have the same joint probability function at the following five pairs of outcomes: (0, 0), (0, 2), (-1, 0), (1, 1), and (-1, 2). What is the covariance of T and U?
Homework Equations
σxy = E(XY) - μx⋅μy
The Attempt at a Solution
My issue with...
Homework Statement
A 200N force is applied to the handle of the hoist in the direction shown. The bearing A supports the thrust (force in the direction of the shaft axis), while bearing B supports only radial load (load normal to the shaft axis). Determine the mass 'm' which can be supported...
Hi PF,
I've got a very trivial conceptual question regarding the conservation of energy with respect to thermodynamics and heat transfer that I can't seem to figure out.
Suppose I have an electric heating element with a 240 volt, 30 amp supply, in contact with a solid volume of an arbitrary...
I've thought about this more since posting, and I'm confident that k can be solved by k = F/x since the damper provides no resistance when the velocity is zero. This whole thread can be deleted if a moderator wishes. Sorry for the waste of bandwidth!
Homework Statement
A viscous damper, with damping constant b, and a spring, with spring stiffness k, are connected to a massless bar. The bar is displaced by a distance of x = 0.1m when a constant force F = 500N is applied. The applied force F is abruptly released from its displaced position if...