In this section are collected topics for absolute beginners, who are not familiar with integration of differentiation techniques

  • Books recommendations for absolute beginners provides specific recommendations about what topics of Physics you should start from in order not to be overwhelmed with mathematical notations and challenging abstract concepts
  • In General Strategies chapter you will learn about simple but powerful techniques which are relevant to most of the problems, such as drawing useful auxiliary pictures and solving the problems in symbols. In this chapter is provided the first beginner friendly problem for practice
  • In Non-Stretchable ropes chapter you will learn to apply a simple logic of conservation of total length of the rope, which is wound around several pulleys. Mathematics of such calculations is super easy, only basic knowledge of solving a system of linear equations is required. This chapter will strengthen your understanding of the strategy of drawing useful snapshots of the system
  • In Introduction to trigonometry you will get familiar or refresh your knowledge with definition of trigonometric functions, the laws of sine and cosine. You will also have a chance to solve some tricky math problems with various triangles and apply trigonometry at describing trajectories of simple rectilinear motion
  • Mirror effect in kinematics chapter contains a collection of examples and problems related to a neat trick or simplifying complex trajectories to a straight line, which leads to simple calculations with the laws of trigonometry
  • In Rigid structures chapter are presented examples of situations when one end of the body moves with some velocity, while another end moves with different speed both in magnitude and in direction. Main idea is to honor equal components of velocities along certain directions, so dimensions of the body would be kept constant with time
  • In Projectile motion chapter are presented a dozen of problems related to motion in the gravity of the Earth, resulting in parabolic trajectories. The chapter starts with definition of components of velocity and acceleration for such motion, followed by neat trick of rotating Cartesian coordinates and finally discusses some aspects of solving such problems in a vector form, without using scalar components
  • In Effective resistance chapter are presented fundamental approaches for calculating total resistance for circuits, which can be reduced to connection of elements in parallel or in sequence. Also there are discussed ideas of equal potentials, which allows to simplify a circuit by splitting or merging certain nodes
  • In Resistance of non-symmetrical structures are presented “Star” to “Delta” transformations, allowing to simplify the circuit, which does not have points of equal potentials. Also there is discussed a general, brute force approach by using the Kirchhoff’s laws
  • Resistance of infinite circuits discusses various aspects of the circuits which has infinite number of elements. Usually such circuits can be simplified by adding one more element to infinitely large circuit