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Yuri Kovalenok is a physics teacher that makes art out of formulas. You can find his interesting work on his Instagram account. But for today we picked a few of our favorites to share with you.
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1. Circular motion
Kovalenok calls this one "Centripetal acceleration and force" and describes how it refers to an airplane making a turn. "The aircraft makes a turn, moving in an arc of a circle with a constant speed v=360 km/h. Determine the radius R of the circle, if the body of the aircraft is rotated around the direction of flight at an angle of 10 degrees," says his Instagram post's description.
2. Tsiolkovsky rocket equation
Tsiolkovsky's rocket equation is a mathematical equation that describes the motion of vehicles that follow the basic principle of a rocket. It is illustrated here with an actual rocket along with the equations.
3. Law of conservation of energy
What a perfect way to illustrate such an abstract concept as the law of conservation of energy. Kovalenok even gives a description for his drawing: "In the experiment with the "dead loop" the ball of mass m is released from height h=3R ( where R is the radius of the loop ). With what force presses the ball in the lower and upper points of the loop? "
What exactly is electromagnetism? Well, this illustration explains it pretty well. "Length of the movable conductor AB is equal to l. Its resistance is R. the resistance of the stationary conductor through which slides the conductor AB, is negligible. Perpendicular to the plane of the conductors applied magnetic field B. What force F must be applied to the conductor AB, so that it moves at a constant speed v. The system of conductors is in the horizontal plane."
5. Artificial satellite rotation
Have you ever wondered about the motion of artificial satellites? Well, Kovalenok is here to explain it and illustrate it. He also offers a little pop quiz. "The period of rotation of the satellite around the Earth is 24 hours. Find at what altitude is the orbit of the satellite?" says this post's description. Can you find the altitude?
6. Circular motion 2
There is a second circular motion post but this time with a car. "At the turn of the road radius of R=100 meters uniformly moving car. The center of gravity of the car is at a height of h= 1 m, the width of the wheels of the track of the car a=1.5 m. Determine the speed v at which the car can tip over. The car does not slide in the transverse direction."
This one stars a person doing some pretty scary acrobatics but this is not about a circus. No, it is about statics. "Ladder length l=4 m is put to a smooth wall at an angle of 60 degrees to the floor. Maximum friction force Ffric=200 N. at what height h can a person weighing m=60 kg climb a ladder before the ladder starts to slide? The weight of the ladder can be neglected."
These are but just a few of our favorites from Kovalenok's collection but you can find plenty more on his Instagram account.