For engr static A composite solid consists of a rectangular block of lightweight concrete and a triangular wedge of steel with dimensions as shown. The rectangular block has a 2 ft radius circular hole drilled through its full depth, perpendicular to the front and back faces.

Assume densities Yc = 125 lb/ft, and ys = 493 lb/ft3

How are we gonna find the calculate ?

A simply supported beam having a span l =3.6m is to carry a uniformly distributed load of
intensity w = 1600kg/m. The cross-section is to be rectangular with depth h and width b = h/2. If
the allowable bending stress in tension or compression is σ w = 84 kg/cm 2 . What is the required
depth h for the cross-section?

How long will it take to saw a rectangular piece of aluminum plate 8 in. wide and 1 1/2 in. thick if the length of the cut is 8 in., the power hacksaw makes 120 rev/min and average feed per stroke is 0.0060 in.?

In a CD player, a CD rotates from rest up to angular speed of   in a time interval, . It is necessary to calculate:

1. What is the angular acceleration of the disc, assuming the angular acceleration is uniform?

1. The angular displacement and the number of revolutions  done by the CD while coming up to speed?

1. If the radius of the disc is , what are the magnitudes of tangential speed and acceleration of a dust particle placed on the rim of the disc when