Static equilibrium : Calculating the range of value for which cables will remain taut.

Determine the range of values of «P» for which both cables remain taut. Please see the attachment for a drawing of the solution.

Study of elastic parameters of cross-linked rubber sample under compressive force.

A sample of an ideal crosslinked rubber has a number average molecular weight between crosslinks of 5000 and a density of 900kg/m3. A block of this rubber, a cube of sides 100mm, is tested at a temperature of 300K. a). What is its tensile modulus? b). What is its shear modulus? Axes X, Y, and Z are chosen parallel to the edges of the cube. A compressive force FX is applied in the X-direction, to reduce the X-dimension from 100mm to 50mm. c). Calculate FX A further compressive force is applied in the Y-direction to reduce the Y-dimension to 75mm, the X-direction remaining at 50mm. d). What now are the magnitude of FX and FY? e). What has the Z-direction now become? f).... click for more

Simple machines

I need to write a research paper on the six simple machines (the inclined plane, the wedge, the screw, the lever, the pulley, and the wheel and axle).

Conservation of momentum in a capture collision of two masses initially moving in different directions. Requires solving a vector polygon.

Two joined known masses after collision are moving with given velocity. Before collision, the two move with non-parallel unknown velocities to be found.

mechanics problem

If a rigid homogeneous rectangular crate of mass m and height h slides on its base of w, while traveling a velocity v, it stikes a low, immovable curb. What is the angular velocity of the crate immediately after the impact, in terms of m,w,h,v; and under what condition (in m,w,h,v) will the crate fall over on its side?