Newton’s first law states that an object at rest stays at rest and an object in motion stays in motion, unless a force is acted upon. Newton’s second law states that acceleration is the result of the application of force to a mass. Newton’s third law states that for every action, there is an equal and opposite reaction. Newton’s law of universal gravitation states that any two bodies in the universe attract each other with a force that is directly proportional to the product of their masses and inversely proportional to the square of the distance between them.
In the article, “Skating is physical, and physics,” Todd Whitcombe gives examples of how Newton’s laws of motion tie in with skating, mostly figure skating. For the first law he states that “the slipperiness of ice reduces friction so a skater remains in motion without additional effort or force.” Now for the second law he mentions how it “explains why female figure skaters, who are much smaller than male skaters, can still go as fast.” For the last law of motion Whitcombe states that “as the blade digs into the ice, the skater pushes against the edge applying force backwards resulting in forward motion – the direction opposite to the push.” He also briefly discusses how gravity acts upon a skater making jumps and spins where “gravity takes over” and brings the skater “back to Earth.”
The article connects to the material specifically with a portion of the lecture tutorial we completed in class about “Newton’s Law and Gravity.” In the lecture tutorial we are asked “if the spaceprobe had lost all ability to control its motion and was sitting at rest at the midpoint between Earth and Mars, would the spacecraft stay at the midpoint or would it start to move?” The answer to that question was that Earth would pull the spaceprobe towards it. Now in this case with the article where the author talks about a figure skater leaping in the air he states “gravity takes over and they are brought back to Earth.” Think about it as the figure skater being the spaceprobe, Earth is pulling on the figure skater to bring them back to the ground, just like in the lecture tutorial where Earth is pulling the spaceprobe back to it.
Overall, I think its interesting how mostly everything can relate to some sort of science just like the author applied science to skating. This portion of the class material has served as a refresher of Newton’s laws, reminding me to not forget them.