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Presentation transcript:

Please Login to Nearpod and tell me about your weekend! Pulley’s Day 2 Please Login to Nearpod and tell me about your weekend!

How was your weekend? Please answer on Nearpod.

My weekend…

Eq: What are some differences between the pulley systems? Listen to me read the eq Ladies please tell me the eq Gentlemen please tell me the eq Everyone please tell me the eq

APK: What is a pulley? Look in your notes from Thursday.

Let’s get the big idea… (review) A single fixed pulley changes only the direction of the force (you pull down and the load goes up).

Let’s get the big idea… (review) Movable pulleys are used to reduce the effort force needed to lift a load by increasing the distance of the effort force (length of rope pulled).

By combining movable and fixed pulleys, less effort force is needed to move a load. This allows for very heavy loads (like a piano) to be moved.

Block and Tackle Video https://www.youtube.com/watch?v=qUSDB3A2fZg

Block and TAckle

Independent video http://study.com/academy/lesson/pulleys-basic- mechanics.html#lesson

Independent video https://www.youtube.com/watch?v=aMx7nIIH9ik