Apparent Weight in a Lift | JEE Main 2027 Physics (English)
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Apparent Weight in a Lift | JEE Main 2027 Physics (English)
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This chapter: • Accelerated Frames and Pseudo Forces | JEE...
All lessons of this unit: • Laws of Motion | JEE Main 2027 Physics (Fr...
Lifts and apparent weight for JEE Physics, taught like a live class: why a weighing machine reads the normal force, N = m(g + a) when the lift accelerates up, m(g - a) when it accelerates down, mg at constant velocity and zero in free fall, the direction-of-acceleration trap, effective gravity inside the lift, and two solved examples from the course.
Chapters
0:00 Introduction
0:35 What does the weighing machine read?
1:53 Accelerating down, constant velocity, free fall
2:58 The trap: acceleration, not motion
3:51 Topper's trick: effective gravity
4:20 Example 1: 50 kg person, lift up, down, steady, free fall
5:53 Example 2: scale readings over three stages of a lift ride
7:39 Quick revision: N = m(g + a) or m(g - a), use direction of a
A free JEE paper every day and a full JEE Main mock every Sunday: https://rankdeterminant.com/go/yt-dai...
Physics · Unit 3 · Laws of Motion · Chapter 4 · Accelerated Frames and Pseudo Forces
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Narrated with a computer voice.