You use a lever to tip a large box on its side. The lever is shown below. a. If you apply a force of 320 N to the lever, what force does the lever apply to the box? (3 points)
B. Using the lever, you have an efficiency of 96%. If you perform 552 J of work, how much useful work does the lever do? (2 points)

a and c

explanation:

both a and c are correct answers to my knowledge, it's been a bit since i've done anything related to magnetic fields, but it should be right.

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.

conservation of mass

mass before something happens = mass afterwards

the components of a vector are the parts of the vectors that are to each other.

b perpendicular