A given package of 50k is moved across the floor with an applied force while accelerating at 4m/s^2 A) Draw a freebody diagram of ALL the forces (4 of them: applied, gravitational, friction, normal)
B) Determine the net force on the package
C) If the frictional force on the package is 100N, then determine the applied force necessary to accelerate it.

In the circuit, the switch s has been open for a long time and r = 125 kohm. it is then suddenly closed. (a) determine the time constant before the switch is closed. s (b) determine the time constant after the switch is closed. _ s (c) let the switch be closed at t = 0. find the current in the switch as a function of time. (use t for time. express your answer in milliamps and seconds.) i(t) =_