A heavy ball of mass M is suspended from the ceiling of a car by a light string of mass m (m << M). When the car is at rest, the speed of transverse waves in the string is 60 m s⁻¹. When the car has acceleration a, the wave−speed increases to 60.5 m s⁻¹. The value of a, in terms of gravitational acceleration g, is closest to:
Physics · Wave Motion
A heavy ball of mass M is suspended from the ceiling of a car by a light string of mass m (m << M). When the car is at rest, the speed of transverse waves in the string is 60 m s⁻¹. When the car has acceleration a, the wave-speed increases to 60.5 m s⁻¹. The value of a, in terms of gravitational acceleration g, is closest to:
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