Homework Statement
Determine the polar moment of inertia and the polar radius of gyration of the shaded area shown with respect to point P.
http://imgur.com/8Kc1S
Homework Equations
Jp = Ix + Iy
Ix = &int y^2dA
Iy = &int X^2dA
The Attempt at a Solution
A = 2(a/2)(a) +...
Homework Statement
Determine by direct integration the moment of inertia of the shaded area with respect to the y axis
http://imgur.com/O0Fu6
Homework Equations
Ix = &int y^2 dA Iy= &int x^2 dA
The Attempt at a Solution
I don't know how to start this problem. some practice...
Homework Statement
2 arms of a u-tube are not identical, one having twice the diameter of the other. a cork in the narrow arm requires a force of 16n to remove it. the tube is filled with water and the wide arm is fitted with a piston. the min force that must be applied to the piston to push...
Homework Statement
a .25kg block oscillates on the end of a spring with a spring constant of 200N/m. If the oscillation is started by elongating spring to 0.15m and giving the block a speed of 3.0m/s. The amplitude is?
Homework Equations
omega= sqrt(k/m), Vm = (omega)Xm
The Attempt...
Homework Statement
meter stick pivoted at point a from its center and swings as a physical pendulum. At which values of a gives you the shortest period of oscillation...1m, .2m, .3m, .4m. .5m
Homework Equations
T = 2pi*Sqrt(I/mgh)
The Attempt at a Solution
the shortest a should...