You are developing a continuous and oriented fiber reinforced composite. You need the material to have a modulus of elasticity in the longitudinal direction is 19.7 GPa and in the transverse it is 3.66 GPa. The volume fraction of fibers is 0.25 will be. Find the modulus of elasticity of the fibers and matrix that you should look for to meet these criteria.

force is based upon mass and acceleration.the statement is not always true.

it can be explained from newton's second law of motion.

as per newton's second law of motion the rate of change of momentum is directly proportional to the applied force and takes place along the direction of force.

mathematically it can be written as -

                                              ⇒      

here   k is the proportionality constant whose value is 1.

                                                            [a is the acceleration=dv/dt]

hence we see that force not only depends on mass and acceleration but also on velocity and rate of change of mass. force f will depend on mass and acceleration only when mass is constant.

hence the statement that force is based upon mass and acceleration is false.

a. spokes of a wheel.

as indicated in the question radial contains rad, also found in radius, so the fracture's would span the radius.