A heavy ball is suspended from the ceiling of a motor car through a light string. A transverse pulse travels at a speed of 60 cm/s on the string when the car is at rest and 62 cm/s when the car accele

Question

A heavy ball is suspended from the ceiling of a motor car through a light string. A transverse pulse travels at a speed of 60 cm/s on the string when the car is at rest and 62 cm/s when the car accelerates on a horizontal road. Find the acceleration of the car. Take g = 10 m/s².

TestHub · Accepted Answer

v ∝ T ​ and T = m g 2 + a 2 ​ . ( 60 62 ​ ) 4 = g 2 g 2 + a 2 ​ = 1.1403 , so a = g 0.1403 ​ = 3.75 m/s² (printed 3.7 is a truncation).

Physics - Wave on String Question with Solution | TestHub

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