Quantrex Quantrex AcademyJEE · NEET · NDA PYQs with solutions Open app
Concepts Of Physics MCQ Edition [Volume 1]PhysicsNewton's Laws of Motion

Determine the tension in the string as shown in the figure. The pulleys and the string are light, while all surfaces are frictionless. Use g = 10 m/s ^2 .

Options

  1. A5 N
  2. B10 N
  3. C7.5 N
  4. D2 N

Correct answer

A. 5 N

Step-by-step solution

Let T be the tension in the string and a be the magnitude of acceleration of the blocks. For the hanging block of mass m₂ = 1 kg , the forces acting on it are the downward gravitational force m₂g and the upward tension T . Assuming it accelerates downwards with acceleration a , its equation of motion is: m₂g - T = m₂a 10 - T = 1 a (1) For the block on the horizontal surface of mass m₁ = 1 kg , the string is attached to its left side, passes around the left pulley, and then goes to the right pulley. When the hanging

Practice Newton's Laws of Motion on Quantrex Academy →

More from Newton's Laws of Motion

A block with a mass of 2 kg rests on a long frictionless horizontal table and is pulled horizontally by a constant force F . The block is observed to travel 10 m during the first tA block of mass 0.2 kg is suspended from the ceiling by a light string. A second block of mass 0.3 kg is suspended from the first block through another string. Determine the tensioPlaced on a smooth horizontal table, two blocks of equal mass m are connected by a light string. A constant force F is applied to pull one of the blocks along the line connecting tIn a TV picture tube, electrons are emitted from the cathode with negligible speed and attain a velocity of 5 10⁶ m/s after travelling one centimeter. Assuming straight line motionTravelling at 40 km/h , a car must be brought to a halt by applying brakes within the next 4.0 m . Given that the car weighs 2000 kg , determine the average force that must be applA particle of mass 50 g travels along a straight line. The variation of its speed with time is displayed in the figure. Determine the force acting on the particle at t = 2 , 4 , anTwo blocks A and B having masses m_A and m_B respectively are placed in contact on a frictionless table. An experimenter pushes block A from behind, causing the blocks to acceleratRaindrops, each having a radius of 1 mm and a mass of 4 mg , are falling at a speed of 30 m/s onto the head of a bald person. Upon splashing on the head, the drops come to rest. As Full Newton's Laws of Motion list All Concepts Of Physics MCQ Edition [Volume 1] PYQs