which of the following would increase the output force of a lever?
a. increase the distance between the effort and the fulcrum
b. decrease the distance between the effort and the fulcrum
c. decrease the distance between the resistance and the effort
d. increase the distance between the resistance and the fulcrum

How are series and parallel circuits simililar? both have multiple paths for electrons to travel. both require resistors in their circuits. both require a switch to complete the circuit. both have at least one path for electrons to travel.

As you are trying to move a heavy box of mass m, you realize that it is too heavy for you to lift by yourself. there is no one around to , so you attach an ideal pulley to the box and a massless rope to the ceiling, which you wrap around the pulley. you pull up on the rope to lift the box. use g for the magnitude of the acceleration due to gravity and neglect friction forces. once you have pulled hard enough to start the box moving upward, what is the magnitude f of the upward force you must apply to the rope to start raising the box with constant velocity? express the magnitude of the force in terms of m, the mass of the box.

Compare the horizontal displacement of the two balls as they travel to the ground. what do you observe?