Question

PLS HELP

See how a block and tackle system can increase your mechanical advantage. You will need two broomsticks, a rope, and two helpers.

A. Give each helper a broom stick and have them stand facing each other holding the broomstick firmly in both hands in a horizontal position. The broomsticks should be at the same level, about two feet apart.

B. Tie one end of the rope to one of the broomsticks. (You may need to have one of your helpers hold the knot firmly in one hand as he or she holds the broomstick to help anchor it.)

C. Wrap the rope around the other broomstick, as in a simple pulley system, and pull on the free end of the rope. Your helpers should resist your pulling. What happens? Can you pull the broomsticks together?

D. Now weave the rope back over the first broomstick, so you have a double pulley. Pull on the free end. What happens now? Can you pull the broomsticks together? What is your mechanical advantage?

E. Try weaving the rope over the broomsticks one or two more times. Describe what happens, and state the mechanical advantage of each situation.

F. Write a summary of what happened and an explanation using the terms: force, distance, work, mechanical advantage

Answer 1

Step-by-step explanation:

In this experiment, a block and tackle system was created using two broomsticks, a rope, and two helpers. The rope was tied to one broomstick and wrapped around the other, creating a simple pulley system. When the free end of the rope was pulled, the helpers resisted and the broomsticks did not move.

Next, the rope was woven back over the first broomstick, creating a double pulley. Pulling on the free end of the rope resulted in the broomsticks moving closer together. This demonstrated the mechanical advantage of the block and tackle system.

By adding more loops of rope over the broomsticks, the mechanical advantage was increased further. The force applied to the rope was spread out over a greater distance, resulting in less force required to move the broomsticks.

In summary, the block and tackle system increases mechanical advantage by spreading out the force applied over a greater distance. This is achieved through the use of pulleys and loops of rope, allowing a smaller force to move a larger load.