Step-by-Step for Every Newton's Laws Problem:

1. Read carefully — identify all bodies, surfaces, strings, pulleys
2. Draw FBD for each body separately
3. Identify friction type — is the body sliding? Use kinetic. Stationary? Use static (and check if maximum is needed)
4. Choose axes — along motion for straight-line; along and perpendicular to incline for incline problems
5. Write F = ma for each body along each axis
6. Write constraints — string length, contact conditions
7. Solve the system of equations
8. Check: Is tension positive? Is friction within limits? Is the direction physically reasonable?

Time-Saving Shortcuts:

• System approach for common acceleration systems
• Atwood formulae for standard pulley problems
• Angle of repose = arctan($mu_s$) for incline problems
• Optimal pulling angle = arctan($mu_s$) for minimum force problems
• Energy conservation can bypass force analysis in some cases

Common JEE Question Types:

• Atwood machine variants
• Blocks on inclines with friction
• Two-block (stacked) problems
• Elevator and apparent weight
• Pulley with constraint relations
• Minimum/maximum force problems