NEET Physics is the very imporatant paper in the Medical Entrance EXAM. So these NEET Physics MCQs and Answers for all Concepts as per the new syllabus. Practice daily with these NEET Physics objective questions on air pollution . NEET Physics Motion of Connected Bodies Multiple Choice Questions
MCQs on Motion of Connected Bodies :
1. 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?
Answer
Answer: (B) (frac{P M}{M+m})
2. 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
Answer
Answer: (C) (frac{F(L-x)}{L})
3. 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
Answer
Answer: (A) 13 N
4. 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/s2
(B) 2.72 m/s2
(C) 19.5 m/s2
(D) 49 m/s2
Answer
Answer: (A) 5.44 m/s2
5. 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
Answer
Answer: (A) 9 N
6. 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
Answer
Answer: (D) (frac{m_{1}+m_{2}}{m_{1}+m_{2}+m_{3}} T)
7. 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) 2.45 N
(B) 24.5 N
(C) 73.5 N
(D) 79 N
Answer
Answer: (C) 73.5 N
8. 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
Answer
Answer: (C) g/3
9. A body of weight 2 kg is suspended as shown in the figure. What is the tension T1 in the horizontal string?
(A) (frac{2}{sqrt{3}})
(B) (frac{sqrt{3}}{2})
(C) 2√3
(D) 2
Answer
Answer: (B) 2√3
10. 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) 4 kg and 4 kg
(D) 2 kg and 2 kg
Answer
Answer: (C) 4 kg