Single Choice

A man is pulling a rope attached to a block on a smooth horizontal table. The tension in the rope will be the same at all points.

AIf and only if the rope is not accelerated
BIf and only if the rope is massless
CIf either the rope is not accelerated or is massless
Correct Answer
Dalways

Solution

In physics, tension is described as the pulling force transmitted axially by the means of a string, a cable, chain, or similar one-dimensional continuous object, or by each end of a rod, truss member, or similar three-dimensional object; tension might also be described as the action-reaction pair of forces acting at each end of said elements. Tension could be the opposite of compression.
The tension in the rope will be same at all points if it is massless or if the string has mass, the tension will be the same in the string when it is not accelerating.
therefore Option C is the right answer.

SIMILAR QUESTIONS

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Consider the situation shown in figure. Both the pulleys and the string are light and all the surfaces are frictionless. Find the tension in the string.

Laws of Motion

In the given arrangement, $$n$$ number of equal masses are connected by strings of negligible masses. The tension in the string connected to $$n$$th mass is -

Laws of Motion

Three solids of mass $$m_{1}$$ , $$m_{2}$$ and $$m_{3}$$ are connected with weight less string in succession and are placed on a frictionless table. If the mass $$m_{3}$$ is dragged with a force $$T$$. The tension in the string between $$m_{2}$$ and $$m_{3}$$ is:-

Laws of Motion

Which of the following expressions correctly represents $$T_{1}$$ and $$T_{2}$$ if the system is given an upward acceleration by a pulling up mass $$A$$?

Laws of Motion

A uniform fine chain of length $$l$$ is suspended with lower end just touching a horizontal table. The pressure on the table, when a length $$x$$ has reached the table is

Laws of Motion

A uniform chain is coiled up on a horizontal plane and one end passes over a small light pulley at a height $$'a'$$ above the plane. Initially, a length $$'b'$$ hangs freely on the other side. If $$b = 2a$$.

Laws of Motion

A flat car is given ar acceleration $$a_{0} = 2\ m/s^{2}$$ starting from rest. A cable is connected to a crate $$A$$ of weight $$50\ kg$$ as shown. Neglect friction between the floor and the car wheels and also the mass of the pulley. Calculate corresponding tension in the cable if $$\mu = 0.30$$ between the crate and the floor of the car.

Laws of Motion

Figure shows a block of mass $$m$$ kept on inclined plane with inclination $$\theta$$. The tension in the string is

Laws of Motion

Three blocks of masses $$m_{1}, m_{2}$$ and $$m_{3}$$ are placed on a horizontal frictionless surface. A force of $$40\ N$$ pulls the system then calculate the value of $$T$$, if $$m_{1} = 10\ kg, m_{2} = 6\ kg, m_{3} = 4\ kg$$.

Laws of Motion

Two blocks, of weights $$3.6$$ N and $$7.2$$ N, are connected by a massless string and slide down a $$30^\circ$$ inclined plane. The coefficient of kinetic friction between the lighter block and the plane is $$0.10$$, and the coefficient between the heavier block and the plane is $$0.20$$. Assuming that the lighter block leads, find (a) the magnitude of the acceleration of the blocks and (b) the tension in the taut string

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