1. The model airplane has a mass of 0.90kg and move at a constant speed on a circle that is parallel to the ground. The path of the airplane and its guideline lies in the same horizontal plane. Because the width of the plane is balanced by the lift generated by its wings. Find the tension T in the guideline. The length of the guideline is 17m for speed of 19m/s to 38m/s

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.