CONNEXUS PULLEYS AND INCLINED PLANES QUICK CHECK IF U HAVE ALL THE ANSWERS PLS HELP

1.) How can a simple fixed pulley make a job easier? (1 point)
O by decreasing the force required to lift the object
O by decreasing the work done
• by changing the direction at which the force needs to be applied
O by decreasing the distance that the force needs to be applied

3.)A pulley system has a mechanical advantage of 3, and an object weighing 9 Newtons must be lifted 15 meters. How much force must be applied to
lift the object?
Use the following equation to find the answer:
MA= F/F
(1 point)
O 3N
O 27 N
O 0.3 N
O 1.7 N

4.) How is the work energy theorem represented as an equation? (1 point)