PPT-Levers and Pulleys

Levers A lever is a tool that people use to make work easier Levers are used to lift things or overcome resistance Levers give us an advantage by making work easier Vocabulary The . 1 LAGGING FOR PULLEYS AGGINGAPABILITIES Baldor•dodge conveyor pulleys can be provided with high quality lagging designed to ensure maximum belt and pulley life in tough applications. Baldor Ancient Greece: Accomplishments. Warm-Up. 1. Turn to your neighbor and compare the achievements you see or use.. 2. See who has the most.. 3. See how similar you are.. 4. See how different you are.. Tried to take a super heavy object up a flight of stairs ? WHAT HAPPENED. Example. Have you ever . Tried to cut a cake with out a knife?. Example. Have you ever . tried to unscrew a nut, bolt, or screw from something with your bare hands and discovered that it was just too tight to loosen even if you had a good grip? . . DEFINATION. :A mechanical lever is a rigid bar that rotates around a axis or a fulcrum.. Rigid bar. fulcrum. Chaitali prabhudesai. Forces. The lever consist of two forces:. An effort force. : which will tend to rotate the bar around the fulcrum . 10.1 The skeletal system provides movement and protection. 10.2 The muscular system makes movement possible. 10.3 Muscles exert forces. 10.4 Bones and joints at as levers. Warm-up True or False. The biceps exercise a pulling force on your arm.. and. Mechanisms. Pulleys. A pulley wheel is a mechanism which helps move or lift objects.. . pulley. Exercise machine. Pulleys. Parts of a Pulley System. Direction of Force. Notice that the pulleys change the direction of the applied force. . Levers. A stiff structure that rests on a turning point called the fulcrum. Used to change the amount, the strength and the direction of movement. . The position of the force and the load can be changed by moving them to different points on the lever. . AS Physical Education. For the exam you will need to know……... The components of a lever. The three classes of levers. Be able to identify the type of lever in a number of sporting actions. Relationship of levers to effective performance (mechanical advantages and disadvantages). 3-Flow Time Reduction Levers. Based on the book: Managing Business Process Flows. Levers for Managing Flow Time. To . reduce the flow . time we must . shorten . the length of every critical path. . F. Not so simple machines!. Just think….. Could you lift your science teacher in the air?. Keep Thinking…... (This means you don’t have to write this!!). Building a house. Lifting a car. Building the pyramids. The . block . in the diagram below . is on a smooth table and is being pulled by a force of 8N to the right and by a force of 5N to the left. What is the acceleration of the block?. Lesson Objective: RF=ma with pulleys. 1 st , 2 nd , & 3 rd class Levers Give me a lever long enough and a fulcrum on which to place it, and I shall move the world. - Archimedes Levers: Gaining More Leverage 1 st class levers review: Jiwi’s science extras clip for EPISODE 2 shows pulleys being used to lower the sh tank to the table as the door is opened. This is a demonstration that pulleys are used to change the dir Toll Free: 800.334.REMA (7362)Phone: 706.752.4000Fax: 706.752.4015www.rematiptop.com Toll Free: 800.334.REMA (7362)Phone: 706.752.4000Fax: 706.752.4015www.rematiptop.com REMA TIP TOP Metal Primers