Question 72: Laws of Motion

Question

All surfaces shown in figure are assumed to be frictionless and the pulleys and the string are light. The acceleration of the block of mass $$2 \mathrm{~kg}$$ is :

Accepted Answer

$$\begin{aligned}
& 40-2 \mathrm{~T}=4 \mathrm{a} \\
& \mathrm{T}-10=4 \mathrm{a} \Rightarrow 20=12 \mathrm{a} \\
& \Rightarrow \mathrm{a}=5 / 3 \Rightarrow 2 \mathrm{a}=\frac{g}{3}
\end{aligned}$$

Answer

$$\mathrm{\frac{g}{2}}$$

Answer

$$\mathrm{\frac{g}{4}}$$

Answer

$$\mathrm{g}$$

Answer

$$\mathrm{\frac{g}{3}}$$

Laws of Motion

All surfaces shown in figure are assumed to be frictionless and the pulleys and the string are light. The acceleration of the block of mass $2 \mathrm{~kg}$ is :

Choose the correct answer: