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Ex 3.1, 7 - Find angle in radian though which pendulum swings - Arc length

Ex 3.1, 7 - Chapter 3 Class 11 Trigonometric Functions - Part 2
Ex 3.1, 7 - Chapter 3 Class 11 Trigonometric Functions - Part 3


Transcript

Ex 3.1, 7 Find the angle in radian though which a pendulum swings if its length is 75 cm and the tip describes an arc of length (i) 10 cm We know that = r Here, = Length of arc = 10 cm r = radius = Length of pendulum = 75 cm We need to find = r 10 = 75 10 75 = = 10 75 radian = 2 15 radian Ex3.1, 7 Find the angle in radian though which a pendulum swings if its length is 75 cm and the tip describes an arc of length (ii) 15 cm We know that = r Here, = Length of arc = 15 cm r = radius = Length of pendulum = 75 cm We need to find = r 15 = 75 15 75 = = 15 75 radian = 1 5 radian Ex3.1, 7 Find the angle in radian though which a pendulum swings if its length is 75 cm and the tip describes an arc of length (iii) 21 cm We know that = r Here, , = Length of arc = 21 cm r = radius = Length of pendulum = 75 cm We need to find = r 21 = 75 21 75 = = 21 75 radian = 7 25 radian

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Davneet Singh

Davneet Singh has done his B.Tech from Indian Institute of Technology, Kanpur. He has been teaching from the past 12 years. He provides courses for Maths, Science, Social Science, Physics, Chemistry, Computer Science at Teachoo.