Pulley: Adds a rope to a wheel which allows you to change the direction of a force. Think flagpole or window blinds. Inclined plane: A hard, flat surface with one end higher than the other. Aids in moving objects. Think slide. Wedge: Two inclined planes put together and helps push...
Pulleys are simple machines with one or more wheels over which a rope is looped. Pulleys can help us lift heavy things more easily. Our homemade pulley system below doesn’t necessarily reduce the weight of our lifting, but it does help us move it with less effort! If you want to lift...
Rope (1/4-inch thick) Brick Garbage can lid For a simple birdbath: Step 1: Lay a shallow pan of water on the ground. Step 2: Put a rock in the pan to keep it from getting knocked over. For a more permanent birdbath: Step 1: With help from an adult, cut a four-foot length...