NEET Problems | Rotational Motion | 2013 to 2017 | Chapterwise Solutions by Rohit Dahiya - Videos

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NEET and AIPMT Solutions – Rotational Motion – 2013 to 2017

Q01 – NEET 2013 – 00:08 – 05:54
Q02 – NEET 2013 – 05:55 – 11:52
Q03 – AIPMT 2014 – 11:53 – 17:27
Q04 – AIPMT 2014 – 17:28 – 24:17
Q05 – AIPMT 1 2015 – 24:17 – 28:21
Q06 – AIPMT 1 2015 – 28:22 – 36:31
Q07 – AIPMT 1 2015 – 36:32 – 42:00
Q08 – AIPMT 2 2015 – 42:01 – 46:40
Q09 – AIPMT 2 2015 – 46:41 – 50:42
Q10 – AIPMT 2 2015 – 50:43 – 57:03
Q11 – NEET 1 2016 – 57:04 – 01:00:40
Q12 – NEET 1 2016 – 01:00:41 – 01:07:27
Q13 – NEET 1 2016 – 01:07:28 – 01:11:00
Q14 – NEET 1 2016 – 01:11:01 – 01:21:31
Q15 – NEET 2 2016 – 01:21:32 – 01:25:15
Q16 – NEET 2 2016 – 01:25:16 – 01:28:13
Q17 – NEET 2 2016 – 01:28:14 – 01:31:06
Q18 – NEET 2 2016 – 01:31:07 – 01:34:21
Q19 – NEET 2017 – 01:34:22 – 01:38:00
Q20 – NEET 2017 – 01:38:01 – 01:43:57
Q21 – NEET 2017 – 01:43:58 – 01:47:56

Q01 – NEET 2013 – A small object of uniform density rolls up a curved surface with an initial velocity ‘v’. It reaches upto a maximum height of (3?^2)/4? with respect to the initial position. The object is
Q02 – NEET 2013 – A rod PQ of mass M and length L is hinged at end P. The rod is kept horizontal by a massless string tied to point Q as shown in figure. When string is cut, the initial angular acceleration of the rod is:
Q03 – AIPMT 2014 – A solid cylinder of mass 50 kg and radius 0.5 m is free to rotate about the horizontal axis. A massless string is wound round the cylinder with one end attached to it and other hanging freely. Tension in the string required to produce an angular acceleration of 2 revolutions s–2 is:
Q04 – AIPMT 2014 – The ratio of the accelerations for a solid sphere (mass ‘m’ and radius ‘R’) rolling down an incline of angle ‘θ’ without slipping and slipping down the incline without rolling is:
Q05 – AIPMT 1 2015 – Three identical spherical sheets, each of mass m and radius r are placed as shown in figure. Consider an axis XX’ which is touching to two shells and passing through diameter of third shell. Moment of inertia of the system consisting of these three spherical shells about XX’ axis is:
Q06 – AIPMT 1 2015 – A rod of weight W is supported by two parallel knife edges A and B and in equilibrium in a horizontal position. The knives are at a distance d from each other. The centre of mass of the rod is at distance x from A. The normal reaction on A is:
Q07 – AIPMT 1 2015 – A mass m moves in a circle on a smooth horizontal plane with velocity v0 at a radius R0. The mass is attached to a string which passes through a smooth hole in the plane as shown. The tension in the string is increased gradually and finally m moves in a circle of radius R0/2 . The final value of the kinetic energy is:
Q08 – AIPMT 2 2015 – An automobile moves on a road with a speed of 54 km/h. The radius of its wheels is 0.45 m and the moment of inertia of the wheel about its axis of rotation is 3 kgm2. If the vehicle is brought to rest in 15s, the magnitude of average torque transmitted by its brakes to wheel is:
Q09 – AIPMT 2 2015 – A Force (? ) ⃗=?? ̂+3? ̂+6? ̂ is acting at a point (? ) ⃗=2? ̂−6? ̂−12? ̂. The value of ? for which angular momentum about origin is conserved is:
Q10 – AIPMT 2 2015 – Point masses m1 and m2 are placed at the opposite ends of a rigid rod of length L, and negligible mass. The rod is to be set rotating about an axis perpendicular to it. The position of point P on this rod through which the axis should pass so that the work required to set the rod rotating with angular velocity ?_0 is minimum, is given by:
Q11 – NEET 1 2016 – A disk and a sphere of same radius but different masses roll off on two inclined planes of the same altitude and length. Which one of the two objects gets to the bottom of the plane first?
Q12 – NEET 1 2016 – A uniform circular disc of radius 50 cm at rest is free to turn about an axis which is perpendicular to its plane and passes through its centre. It is subjected to a torque which produces a constant angular acceleration of 2.0 rad s–2. Its net acceleration in ms–2 at the end of 2.0 s is approximately:
Q13 – NEET 1 2016 – A particle of mass 10 g moves along a circle of radius 6.4 cm with a constant tangential acceleration. What is the magnitude of this acceleration if the kinetic energy of the particle becomes equal to 8 × 10–4 J by the end of the second revolution after the beginning of the motion?
Q14 – NEET 1 2016 – From a disc of radius R and mass M, a circular hole of diameter R, whose rim passes through the centre is cut. What is the moment of inertia of the remaining part of the disc about a perpendicular axis, passing through the centre?

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