Question

A trolley ($100\text{kg}$) moving forward with acceleration of $1{\text{m/s}}^2$ has block of $1\text{kg}$ mass present on its floor. Find pseudo force acting on block ${}^{\prime }{A}^{\prime }$ with respect to a reference frame attached to trolley

• A. $-1\text{N}$
• B. $1\text{N}$
• C. $100\text{N}$
• D. $10\text{N}$

Answer 1

The correct option is A $-1\text{N}$

We know that
$\Rightarrow$ Pseudo force = $-ma$
here $m$ is mass of body
$a$ is acceleration of noninertial frame
$F_p=\left(\text{mass of body}\right)\times -\left(\text{acceleration of frame}\right)$
$=-1\times 1=-1\text{N}$