.A helical compression spring is made of hard-drawn steel wire with a 0.080 inch diameter and has an outside diameter of 0.880 inches. The ends are plain and ground, and there are 8 total coils. a.Find the spring index. b.Find the number of number of active coils. c. Find the solid length. d.Find the maximum force that can be applied without failure for n=1.2

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.

snell's law

refractve index = sin incidence / sin refraction