[QUE/ME-08006] ME-PROBLEM

In equilibrium a pendulum suspended from an inextensible spring in an accelerating car will not hang vertically. The string will make an angle \(\theta\) with vertical see \Figref{me-fig-08002-Q}.\\ \FigBelow{30,20}{50}{70}{me-fig-08002-Q}{Pendulum in accelerating car}\\ Assume that \(g\) is known and the \(\theta\) is measured by an observer sitting in the car. Then without assuming the gravitational and inertial masses to be equal, which of the following quantity can be related to the angle \(\theta\) ?

• value of acceleration.
• value of inertial mass.
• value of gravitational mass.
• the ratio of gravitational and inertial masses.

Give a short explanation of your answer.