A block of mass 40 kg slides over a surface, when a mass of 4 kg is… | JEE Main 2022 (29 Jun, Shift 2)

Q12JEE Main 2022 · 29 JUN · SHIFT 2Easy

Friction Basics

A block of mass 40 kg slides over a surface, when a mass of 4 kg is suspended through an inextensible massless string passing over frictionless pulley as shown below.

The coefficient of kinetic friction between the surface and block is 0.02. The acceleration of block is. (Given g = 10 ms ${}^{-}$ 2.)

Show answer and solution

Answer: (d)

Driving force: weight of 4 kg $= 40$ N; friction on 40 kg block $= 0.02 \times 40 \times 10 = 8$ N.
$a = \dfrac{40 - 8}{40 + 4} = \dfrac{32}{44}$
$a = \dfrac{8}{11}\text{ m s}^{-2}$ , so the answer is (d).

Report a mistake

More questions on Friction Basics

A 2 kg block is pushed against a vertical wall by applying a horizontal force of 50 N…JEE Main 2022 (30 Jun, Shift 1)
A bag is gently dropped on a conveyor belt moving at a speed of 2 m/s. The coefficient of…JEE Main 2022 (27 Jul, Shift 1)
The coefficient of static friction between a wooden block of mass 0.5 kg and a vertical…JEE Main 2021 (24 Feb, Shift 1)
A block of mass m slides along a floor while a force of magnitude F is applied to it at…JEE Main 2021 (16 Mar, Shift 1)
A body of mass 1 kg rests on a horizontal floor with which it has a coefficient of static…JEE Main 2021 (17 Mar, Shift 2)
As shown in the figure, a block of mass √(3) kg is kept on a horizontal rough surface of…JEE Main 2021 (26 Feb, Shift 1)
A boy of mass 4 kg is standing on a piece of wood having mass 5 kg. If the coefficient of…JEE Main 2021 (17 Mar, Shift 2)
A block of mass m is moving on rough horizontal surface with momentum p. The coefficient…MHT CET 2020 (16 Oct, Shift 2)

Friction Basics question from JEE Main 2022 (29 Jun, Shift 2)

More questions on Friction Basics