A U-shaped wire of mass has its ends immersed in two jars of mercury, which are separated by a distance . The wire is in uniform magnetic field perpendicular to the plane of the wire. A very fast current pulse is passed through the wire and in response the wire jumps upward a height . How large was the charge which passed through the wire? Use . (You may want to use the results of (Part a).) You may ignore the effect of the gravitational field while the current pulse runs through the wi

none, its a machine

see earlier answer

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.