MAHE Manipal B.Sc Nursing 2025
ApplyAccorded Institution of Eminence by MoE, Govt. of India | NAAC A++ Grade | Ranked #4 India by NIRF 2024
Motion of blocks when connected with string is considered one of the most asked concept.
5 Questions around this concept.
A block of mass M is pulled along a horizontal frictionless surface by a rope of mass m. If a force F is applied at the free end of the rope, the force exerted by the rope on the block is:
Three blocks of masses 6kg, 4kg, and 2kg kept on a smooth surface connected together with light strings are pulled applying 24N horizontal force as shown in the figure. The tension T1 in the string is- (in N)
In the given figure, three blocks are connected by masses of cords. Masses of the block are $\mathrm{m}, 3 \mathrm{~m}$ and 5 m and they are pulled by a force F on a frictionless horizontal surface. If the tension $\mathrm{T}_1=16 \mathrm{~N}$ then $\mathrm{T}_2$ is equal to-
A string is wrapped around a solid cylinder and then the end of the string is held stationary, while the cylinder is released from rest. The acceleration of the cylinder and tension in the string -
2 blocks connected with a string
$\begin{aligned} & T=m_1 a \\ & F-T=m_2 a \\ & a=\frac{F}{m_1+m_2} \\ & T=\frac{m_1 F}{m_1+m_2}\end{aligned}$
3 blocks connected with a string
$$
a=\frac{F}{m_1+m_2+m_3}
$$
$$
T_1=\frac{\left(m_2+m_3\right) F}{m_1+m_2+m_3}
$$
$$
T_2=\frac{m_3 F}{m_1+m_2+m_3}
$$
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