Quantrex Quantrex AcademyJEE · NEET · NDA PYQs with solutions Open app
Most Important Selected Qs for JEE AdvancedPhysicsOscillations

A certain rough platform perform oscillating given by y_p=A t j , while another block kept on the platform perform oscillations on the platform given by x _ B = A ( t ) i . As seen from, the ground.

Options

  1. AThe direction of frictional force on the block will always be opposite to its velocity relative to the platfor
  2. BThe direction of frictional force on the block will be always opposite to its relative acceleration w.r.t. pla
  3. CThe direction of frictional force on the block at any instant will be ( t) i + ( t) j
  4. DDireciton of friction at any instant will be ( t) i + ( t) j .

Correct answer

C. The direction of frictional force on the block at any instant will be ( t) i + ( t) j

Step-by-step solution

aligned & v_p=A t j & v_B=-A ( t) j & Direction of friction = t i + t j aligned

Practice Oscillations on Quantrex Academy →

More from Oscillations

A tank contains two immiscible liquids of densities 6 and 2 . The higher density liquid is filled up to a height L/2 from the bottom. A thin rod of density and length L is fully im 2026The frequency of oscillation of a mass m suspended by a spring is v₁ . If the length of the spring is cut to half, the same mass oscillates with frequency v₂ . The value of v₂/v₁ i 2026A spring stretches by 2 mm when it is loaded with a mass of 200 g. From equilibrium position the mass is further pulled down by 2 mm and released. The frequency associated with the 2026A particle is executing simple harmonic motion. Its amplitude is A and time period is 5 sec. The time required by it to move from x = A to x = A 2 is _______ sec. 2026Match List-I with List-II. List-I List-II A. ^2 t I. Periodic with time period T = but not simple harmonic motion (SHM) B. ^3(2 t) II. Periodic with time period T = 2 but Not SHM C 2026A uniform disc of radius R and mass M is free to oscillate about the axis A as shown in the figure. For small oscillations the time period is ______. ( g is acceleration due to gra 2026The velocity of a particle executing simple harmonic motion along x -axis is described as v^2 = 50 - x^2 , where x represents displacement. If the time period of motion is x 7 s, t 2026The equation of motion of a particle is given by x = a (50t + 3 ) cm. The particle will come to rest at time t₁ and it will have zero acceleration at time t₂ . The t₁ and t₂ respec 2026 Full Oscillations list All Most Important Selected Qs for JEE Advanced PYQs