Sign in
12thPass logo
New chatPYQ LibraryDoubtsRank report
Sign in to see Recents

Your guest activity stays on this device

Sign in to save progress →
Sign in

Laws of Motion question

2020 · Q143
Guest · filters and generic practice availableBrowsing as a guest · PYQ filters and generic practice are available. Sign in only for personalised features and saved progress.
  1. PYQ Library
  2. /NEET
  3. /Physics
  4. /Laws of Motion
  5. /2020 · Q143

Laws of Motion question

2020 · Q143

NEETPhysicsLaws of MotionMCQ+4 / −1
Two bodies of mass 4 kg and 6 kg are tied to the ends of a massless string. The string passes over a pulley which is frictionless (see figure). The acceleration of the system in terms of acceleration due to gravity (g) is :
NEET 2020 Phase 1 Physics - Laws of Motion Question 11 English
  1. A
    g/2
  2. B
    g/5
  3. C
    g/10
  4. D
    g
View written solutionFree

Correct answer: B

Acceleration of the masses is given to be :
a=(m1−m2)g(m1+m)a = {{\left( {{m_1} - {m_2}} \right)g} \over {\left( {{m_1} + {m_{}}} \right)}}a=(m1​+m​)(m1​−m2​)g​
where, m1>m2{m_1} \gt {m_2}m1​>m2​
a=(6−4)g6+4a = {{\left( {6 - 4} \right)g} \over {6 + 4}}a=6+4(6−4)g​
a=g5a = {g \over 5}a=5g​

PreviousNext

More from Laws of Motion

  • A block of mass 10 kg is in contact against the inner wall of a hollow cylindrical drum of radius 1 m. The coefficient of friction between the block and the inner wall of the cylinder is 0.1. The minimum angular velocity needed for the…2019 · MCQ
  • A mass m is attached to a thin wire and whirled in a vertical circle. The wire is most likely to break when :2019 · MCQ
  • Which one of the following statements is incorrect?2018 · MCQ
  • A block of mass m is placed on a smooth inclined wedge ABC of inclination q as shown in the figure. The wedge is given an acceleration ‘a’ towards the right. The relation between a and q for the block to remain stationary on the wedge is Includes diagram2018 · MCQ
  • One end of string of length l is connected to a particle of mass 'm' and the other end is connected to a small peg on a smooth horizontal table. If the particle moves in circle with speed 'υ', the net force on the particle…2017 · MCQ
  • Two blocks A and B of masses 3m and m respectively are connected by a massless and inextensible string. The whole system is suspended by a massless spring as shown in figure. The magnitudes of acceleration of A and B immediately after the… Includes diagram2017 · MCQ
  • A car is negotiating a curved road of radius R. The road is banked at an angle θ. The coefficient of friction between the tyres of the car and the road is μs. The maximum safe velocity on this road is2016 · MCQ
  • Two stones of masses m and 2m are whirled in horizontal circles, the heavier one in a radius 2r​ and the lighter one in radius r. The tangential speed of lighter stone is n times that of the value of heavier stone when they…2015 · MCQ