Laws of Motion — Predicted 2026

AI-Predicted Question Angles for UPSC 2026

Based on trend analysis, current affairs, and recurring themes in Laws of Motion.

Systems with varying mass (e.g., rocket propulsion, chain problems)

medium

While $F=ma$ is for constant mass, the more general form $F = dp/dt$ is crucial for systems where mass changes, like rockets expelling fuel or chains being pulled. NEET often includes questions that test deeper understanding beyond the basic $F=ma$. Problems involving a chain being pulled off a table or rocket thrust calculations could appear, requiring the application of momentum conservation and variable mass dynamics. This tests a more advanced application of Newton's Second Law.

Complex pulley systems with friction

high

Standard pulley problems (Atwood machine, block on table with pulley) are common. Adding friction to these systems (e.g., friction between the block and the table, or even between the string and the pulley if it's not ideal) increases complexity and tests a student's ability to combine multiple concepts. This type of question requires meticulous FBDs for each component and careful application of Newton's Second Law, often leading to simultaneous equations. It's a good discriminator for students with strong analytical skills.

Conceptual questions on non-inertial frames and fictitious forces

low

While not a primary focus for NEET, a basic conceptual understanding of non-inertial frames (like an accelerating car or rotating platform) and the need for fictitious forces (like centrifugal force) to apply Newton's laws in such frames can be tested. These questions would likely be qualitative, asking about the 'apparent' forces experienced or the validity of Newton's laws. It tests a deeper conceptual understanding of the conditions under which Newton's laws are directly applicable.