 How to solve these questions? Do you want to know some tips to solve physics questions easily? Understand the constraints, which directions can the objects move and which directions they can't. Draw the diagram. Visualization really helps in understanding the system. Convert words to equations. All the info in the equation can be written as a set of equations. Add to these equations by writing the basic equations of the chapter, like the force equation for NLM, torque equation for RBD or Faraday's law for reduction, for example. Make sure you have as many equations as unknowns, then solve the questions by eliminating the variables.