The Science Behind Force and Motion
With using simple machines.
Getting To Know Force And Motion
Did you know that when you get on a teater totter, you are using a simple machine? You are! There are 6 simple machines, the wheel and axle, an inclined plane, a wedge, a screw, a lever, and a pulley. We use them to make our work easier to complete. To be able to use simple machines, you have to understand Newtons Laws of Motion! To use simple machines, you also have to use force and motion!
Newton's Laws Of Motion
Newton's First Law
Newton's first law states that unless a force acts on an object, the object will remain in constant motion. Also that an object at rest stays at rest until a force acts upon it. The last thing is that an object at a constant speed will continue to move at a constant speed in a straight line.
Newton's Second Law
Newton's second law is all about acceleration, mass, and net force. Acceleration is the rate at which the velocity of an object changes. The net forces acting upon an object can change an objects velocity in speeding it up, slowing it down, or change the direction. All of these changes can be known as accelerations.
The formula is Force= Mass X Acceleration
Newton's Third Law
Newton's Third Law states that when one object applies a force on a second object, the second object applies a force on the first object. Sometime this law is called the action-reaction law of motion.
Simple Machines
There are 6 simple machines, the pulley, the screw, the wedge,an inclined plane, wheel and axle, and a lever. The pulley can have a chain, belt, or rope wrapped around a wheel so you can pull on it. The screw is an inclined plane that is wrapped around a cylinder. A wedge is an object that is thick at one edge and tapered to a thin edge at the other end. An inclined plane is a flat surface with one end higher than the other end. A wheel and axle is when a wheel is attached to a bar so they can rotate together. The last simple machine is a lever, the lever is a straight bar that pivots on or around a fulcrum. These are all 6 simple machines!
This is a chart of simple machines and compound machines. The link for the website ishttp://www.reallygoodstuff.com/physical-science/c/G2A/.
This is a video of myself and Kylee using a pulley to pull up blocks. Our pulley made the work easier!
Resources
Scott Foresman Science Book "Force and Motion"