(s)(uscs units) a hot-rolling operation is performed using rolls of diameter = 24 in. the rolling stand can exert a maximum force of 400,000 lb, and the mill has a maximum horsepower of 100 hp. it is desired to reduce a 1.5-in-thick plate by the maximum possible draft in one pass. the starting plate is 10 in wide. in the heated condition, the work material has a strength coefficient = 20,000 lb/in2 and a strain hardening exponent = zero. determine (a) maximum possible draft, (b) associated true strain, and (c) maximum speed of the rolls for the operation.

i think the answer is a, hope this : )

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.