Physics MCQ on Motion of Connected Bodies for NEET, JEE, Medical and Engineering Exam 2021

MCQ on Motion of Connected Bodies: Previous trends reveal that NEET/JEE aspirants find Physics as the most challenging section amongst the other sections. But most of them fail to decipher the reason behind this. This particularly can be as the candidates taking up this examination are predominantly medical aspirants with their subject of interest being Biology. Also, sections like Physics are more on theories, laws, numerical as opposed to Biology which is more of fact-based, life sciences and comprising of substantial explanations.

In this post we are providing you MCQ on Motion of Connected Bodies, which will be beneficial for you in upcoming NEET, AIIMS, JEE, WBJEE, Medical and Engineering Exams.

MCQ on Motion of Connected Bodies

Q1. What will the acceleration of the system of two masses connected to a pulley be if the masses weigh 5 kg and 10 kg?
a) g
b) g/2
c) g/3
d) g/4

Q2. A frictionless pulley kept on a horizontal table connects two blocks of masses 4 kg and 5 kg. What is the acceleration of 5 kg mass?
a) 5.44 m/s^2
b) 2.72 m/s^2
c) 19.5 m/s^2
d) 49 m/s^2

Q3. Three solid masses m1, m2 and m3 placed on a frictionless table and are connected in succession. If the mass m3 is dragged with a force T, the tension in the string between m2 and m3 are given as
a) [latex]\frac{m_2}{m_1+m_2+m_3}T[/latex]
b) [latex]\frac{m_3}{m_1+m_2+m_3}T[/latex]
c) [latex]\frac{m_2+m_3}{m_1+m_2+m_3}T[/latex]
d) [latex]\frac{m_1+m_2}{m_1+m_2+m_3}T[/latex]

Q4. A body of weight 2 kg is suspended as shown in the figure. What is the tension T1 in the horizontal string?
a) [latex]\frac{2}{\sqrt{3}}[/latex]
b) [latex]\frac{\sqrt{3}}{2}[/latex]
c) [latex]2\sqrt{3}[/latex]
d) [latex]2[/latex]

Q5. A string passing over a frictionless pulley has a mass of 6 kg attached to one of its ends. To the other end a mass of 10 kg is attached. What is the tension in the thread?
a) 24.5 N
b) 2.45 N
c) 73.5 N
d) 79 N

Q6. A block of mass M is pulled along a horizontal frictionless surface by a rope of mass m. If P is the force exerted on the free end of the rope, what is the force exerted on the block by the rope?
a) [latex]\frac{Pm}{M+m}[/latex]
b) [latex]\frac{PM}{M+m}[/latex]
c) [latex]\frac{Pm}{M-m}[/latex]
d) [latex]{P}[/latex]

Q7. A block of mass which weighs 4 kg is suspended through spring balances A and B. Then A and B will read respectively
a) 0 kg and 4 kg
b) 4 kg and 0 kg
c) 4kg and 4 kg
d) 2 kg and 2 kg

Q8. A rope of length L is pulled by a constant force F. The tension in the rope at a distance x from the end where the force is applied is
a) [latex]\frac{Fx}{L-x}[/latex]
b) [latex]\frac{FL}{L-x}[/latex]
c) [latex]\frac{F(L-x)}{L}[/latex]
d) [latex]\frac{FL}{x}[/latex]

Q9. Three blocks A, B and C each weighing 1, 8, and 27 kg respectively are connected to each other by an inextensible string and are moving on a smooth surface. If T3 is equal to 36 N, then what will T2 be equal to?
a) 9 N
b) 18 N
c) 3.375 N
d) 1.25 N

Q10. Three weights A, B and C of mass 2 kg each are hanging on string passing through a frictionless pulley. What is the tension in the string connecting weights B and C?
a) 13 N
b) 19.6 N
c) 3.3 N
d) 0

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