Question

A pendulum with a bob of mass 2 $kg$ is hanging from the ceiling of a trolley as shown in the figure. The trolley is uniformly accelerating with an acceleration $a$, then $\left(g=10 m / s ^{2}\right)$

• A. $a=6 m / s ^{2}$
• B. $a=7.5 m / s ^{2}$
• C. $a=4 m / s ^{2}$
• D. $a=2.5 m / s ^{2}$

Answer 1

Answer: (B)

$ a =g \tan \theta=10 \tan 37^{0} $
$=10(3 / 4)$
$ \Rightarrow 7.5 m / s ^{2}$$ a =g \tan \theta=10 \tan 37^{0} $
$=10(3 / 4)$
$ \Rightarrow 7.5 m / s ^{2}$