AP EAMCET201724 Apr 2017Evening ShiftPhysicsWaves and SoundActual
As shown in the figure, a block of mass 9 ~kg is hung by a wire of area of cross-section of 1 mm ^2 in a lift going up with an acceleration of 2 ~ms ⁻² . If the speed of the transverse wave on the wire is 120 ~ms ⁻¹ , the density of the material of the wire is (Acceleration due to gravity =10 ~ms ⁻² )
Options
- A1.5 ~g ~cm ⁻³
- B3.5 ~g ~cm ⁻³
- C5.5 ~g ~cm ⁻³
- D7.5 ~g ~cm ⁻³
Correct answer
D. 7.5 ~g ~cm ⁻³
Step-by-step solution
No solution. Refer to answer key.