Question 71: Laws of Motion

Question

Three blocks $$A, B$$ and $$C$$ are pulled on a horizontal smooth surface by a force of $$80 \mathrm{~N}$$ as shown in figure

The tensions T$$_1$$ and T$$_2$$ in the string are respectively :

Accepted Answer

$$a_A=a_B=a_c=\frac{F}{5+3+2}=\frac{80}{10}=8 \mathrm{~m} / \mathrm{s}^2$$
$$\mathrm{T_1=5	imes8=40}$$
$$\mathrm{T_2-T_1=3	imes8\Rightarrow T_2=64}$$

Answer

40N, 64N

Answer

60N, 80N

Answer

80N, 100N

Answer

88N, 96N

Laws of Motion