What is a lever?
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What is a pulley?
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{"type":"multi-choice","id":"9949","dataJson":{"type":"multi-choice","slide_id":54394,"key":9949,"prompt":"\u003cp\u003eWhat is a pulley?\u003c/p\u003e","validResponse":[10515],"use_data":false,"question_body":"","question_video_url":"","question_fileboy_image_id":"","options":[{"label":"a wheel over which a belt, rope, or chain is pulled to lift or lower a heavy object","value":10515,"fileboyId":"037d2f78-8b34-4a1b-a434-b71c4a525915"},{"label":"a long arm that rests on a support called a fulcrum","value":10516,"fileboyId":"a4bf86f3-4c22-4027-969a-d53eea1ebb77"},{"label":"the place where the rod pivots (or rotates)\n","value":10518,"fileboyId":"5bc4a98d-a127-4637-a15a-6b3ed51cee60"},{"label":"the weight of an object","value":10514,"fileboyId":"2ece9616-cdcb-4c9f-9523-087b3d114b52"},{"label":"a pin or shaft on which a mechanical part turns\n","value":10517,"fileboyId":"05bfa6ec-08f0-42b0-8182-f6ec814d0073"}],"question_data":{"body":"Pulleys are another type of simple machine which allow a smaller force to have a greater effect. A basic pulley comprises of a wheel on a fixed axle, with a groove along the edges to guide a rope or cable. \n\n","video":null,"image_url":"https://www.developingexperts.com/file-cdn/images/get/aeef8c95-3556-43fc-9627-87e7b23f05ed?transform=resize:800x600;format:webp;quality:80"},"limitChoices":{"min":1,"max":1}}}
What is a fulcrum?
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{"type":"multi-choice","id":"9950","dataJson":{"type":"multi-choice","slide_id":54391,"key":9950,"prompt":"\u003cp\u003eWhat is a fulcrum?\u003c/p\u003e","validResponse":[10518],"use_data":false,"question_body":"","question_video_url":"","question_fileboy_image_id":"","options":[{"label":"a wheel over which a belt, rope, or chain is pulled to lift or lower a heavy object","value":10515,"fileboyId":"037d2f78-8b34-4a1b-a434-b71c4a525915"},{"label":"the place where the rod pivots (or rotates)\n","value":10518,"fileboyId":"5bc4a98d-a127-4637-a15a-6b3ed51cee60"},{"label":"a long arm that rests on a support called a fulcrum","value":10516,"fileboyId":"a4bf86f3-4c22-4027-969a-d53eea1ebb77"},{"label":"a pin or shaft on which a mechanical part turns\n","value":10517,"fileboyId":"05bfa6ec-08f0-42b0-8182-f6ec814d0073"},{"label":"the weight of an object","value":10514,"fileboyId":"2ece9616-cdcb-4c9f-9523-087b3d114b52"}],"question_data":{"body":"The place where the lever rotates is called the pivot or fulcrum. Where the pivot point is and how long it is affects the lever's effectiveness. For example, if the fulcrum was close to the box, it would be much easier to lift the load than if the fulcrum was closer to you. ","video":null,"image_url":"https://www.developingexperts.com/file-cdn/images/get/60f413de-1fe9-48c4-8678-7674ce64f944?transform=resize:800x600;format:webp;quality:80"},"limitChoices":{"min":1,"max":1}}}
What is a pivot?
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What is a load?
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Look at the slide below to work out the answer.