Скачать или смотреть Challenge Yourself with This "Sliding Projectile" Problem for Physics Lovers | IRODOV 1.136

In this Physics video in Hindi for the chapter "Work Energy and Power" of Class 11, we discussed a fascinating question from I.E. Irodov’s Problems in General Physics — Question no. 1.136.

The problem states:
A small body A starts sliding from the height h down an inclined groove passing into a half-circle of radius h/2. Assuming the friction to be negligible, find the velocity of the body at the highest point of its trajectory after breaking off the groove.

This question beautifully connects the concepts of Work, Energy and Power with Projectile Motion. It challenges students to apply conservation of mechanical energy and understand how motion transitions from constrained motion inside a groove to free flight in air. Such problems are often seen in IIT-JEE Advanced examinations, where a deep understanding of physics principles is tested beyond standard textbook level.

In the video, we start by analyzing the situation in which a small body slides down a smooth curved track from a certain height. Because friction is absent, the principle of conservation of energy plays a central role. The body starts with potential energy at height h, which gradually converts to kinetic energy as it moves downward along the inclined groove. As the body enters the half-circular section of radius h/2, it undergoes curvilinear motion, and the normal reaction between the body and the groove determines when the body will lose contact.

At the highest point of the trajectory, after leaving the groove, the motion becomes projectile motion under gravity. To find the velocity at that instant, we track the total energy transformation from the initial point at height h to the final point at the top of its flight path. The solution uses logical reasoning to relate height differences, kinetic energy variations, and the physical condition at the point of detachment.

The key idea discussed in this Hindi video is that even though the body follows a curved path, the law of conservation of energy remains valid throughout, as friction is negligible. The transition from circular motion to projectile motion is explained step by step, focusing on how the velocity direction changes and how much of it remains at the highest point of the trajectory.

This problem is a brilliant example of how the Work, Energy and Power chapter connects with real-world physical motion and the kind of analytical thinking required in IIT-JEE Advanced Physics problems. By solving this Irodov question, students strengthen their conceptual understanding of energy conservation, motion on curved tracks, and the conditions under which a particle leaves contact with a surface.

Watching this Hindi explanation will not only help in mastering this particular Irodov problem but will also build the foundation to solve similar IIT-JEE Advanced level problems efficiently. Every step is broken down intuitively, ensuring clarity for Class 11 students who are serious about JEE preparation.

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