Curiosity Guide #502 Simple Machines: Wedge

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Curiosity Guide #502 Simple Machines: Wedge Curiosity Guide #502 Simple Machines: Wedge Accompanies Curious Crew, Season 5, Episode 2 (#502) Wedge Dragging Investigation #3 Description How can using a simple tool make a job less of a drag? Materials • Triangular wood block • Square wood block • Hammer • Nails • Spring scale • Large clear container • 3 bags of rice Procedure 1) Drive a nail 1-2 centimeters deep in the middle of the flat side of each block. 2) Pour the bags of rice into the clear container. 3) Place the square block into the rice on one end of the container so that the nail is sticking up. 4) Attach the spring scale to the nail. 5) While gently pressing a finger on the back end of the block, pull the spring scale to drag the block through the rice. 6) How much force is required to move the block? 7) Repeat the experiment again using the triangular block. 8) How does the force compare? My Results Explanation Because the triangular block is a wedge, it can separate and redirect the grains of rice more easily than the flat-faced square block can. As a result, pulling the triangular wedge through the rice requires less force than pulling the square block in the same conditions. Wedges are simple machines that provide a mechanical advantage to make work easier. The wedge is often used to separate, hold, or lift objects. Parents and Educators: use #CuriousCrew #CuriosityGuide to share what your Curious Crew learned! Curious Crew is a production of Michigan State University. Learn more at WKAR.org. © MSU Board of Trustees. All rights reserved. .
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