Uniform Circular Motion (UCM) - Motion | Class 9 Physics
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Uniform Circular Motion (UCM) - Motion | Class 9 Physics
289 591 просмотр · 6 лет назад
Magnet Brains
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289 591 просмотр · 6 лет назад
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✅ In this video,
✔️ Class: 9
✔️ Subject: Physics
✔️ Chapter: Motion
✔️ Topic Name: Equations of Motion : NCERT Questions (Part 1)
===============================================
00:00 introdction
02:36 Uniform Circular motion
3:13 Example 1
7:36 Uniform Circular motion
10:06 Example 2
12:34 Numericals Questions 1
14:59 Question 2
17:13 Website Overview
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Points covered in this video:-
Example 8.5 A train starting from rest attains a velocity of 72 km h–1 in 5 minutes. Assuming that the acceleration is uniform, find (i) the acceleration and (ii) the distance travelled by the train for attaining this velocity.
Solution: We have been given
u = 0; v =72 km h-1 = 20 ms-1 and t = 5 minutes = 300 s
(i) From Eq. (8.5) we know that,
Example 8.6 A car accelerates uniformly from 18 km h–1 to 36 km h–1 in 5 s. Calculate (i) the acceleration and (ii) the distance covered by the car in that time.
Solution: We are given that.
u = 18 km h-1 = 5 ms-1
v = 36 km h-1 = 10 ms-1
t = 5s
(i) From Eq. (8.5) we have, .
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