Luc, who is 1.80 m tall and has a mass of 80 kg, is standing at the center of a playground merry-go-round with his arms extended, holding a 1.25 kg dumbbell in each hand. the merry-go-round can be modeled as a 80-cm-diameter disk with a mass of 20 kg. luc's body can be modeled as a uniform 40-cm-diameter cylinder with massless arms extending to hands that are 80 cm from his center. the merry-go-round is coasting at a steady 40 rpm just before luc brings his hands in to his chest such that the dumbells are located on the rotation axis. afterward, what is the angular velocity, in rpm, of the merry-go-round?

a coal burning power plant

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.

answer( sicar );