Question

A mass m = 0.1 gram is hanged on a string inside a bus. The bus is accelerating at a constant rate of 5 m/s^2. At what angle will the mass deflect from the vertical? (in degrees)?

Answer 1

Answer

Angle is $\theta$

So

$Masin\theta=Mg$

So angle

$\theta=sin^{-1}(g/a) \\=sin^{-1}(9.8/5)$