1. Tardigrade
  2. Question
  3. Physics
  4. Two smooth blocks are placed at a smooth corner as shown in figure. Both the blocks are having mass m. We apply a force F on the small block m. Block A presses block B in the normal direction, due to which pressing force on vertical wall will increase, and pressing force on the horizontal wall decreases, as we increases F(θ=37°. with horizontal). <img class=img-fluid question-image alt=image src=https://cdn.tardigrade.in/img/question/physics/fd417b1e0bb30121932d4d3c8d0847ae-.png /> As soon as the pressing force on the horizontal wall by block B becomes zero, it will lose contact with ground. If the value of F further increases, block B will accelerate in the upward direction and simultaneously block A will move towards right. If the acceleration of block A is a rightwards, then the acceleration of block B will be

Q. Two smooth blocks are placed at a smooth corner as shown in figure. Both the blocks are having mass $m$. We apply a force $F$ on the small block $m$. Block $A$ presses block $B$ in the normal direction, due to which pressing force on vertical wall will increase, and pressing force on the horizontal wall decreases, as we increases $F\left(\theta=37^{\circ}\right.$ with horizontal).
image
As soon as the pressing force on the horizontal wall by block $B$ becomes zero, it will lose contact with ground. If the value of $F$ further increases, block $B$ will accelerate in the upward direction and simultaneously block $A$ will move towards right.
If the acceleration of block $A$ is $a$ rightwards, then the acceleration of block $B$ will be

Laws of Motion Report Error

Solution:

image
To keep regular contact
$a \sin \theta=b \cos \theta$
$b=a \tan \theta=\frac{3}{4} a$

Questions from Laws of Motion

1. In the following figure, an object of mass $ 1.2\, kg $ is at rest at point $ P $ . lf $ R $ and $ F $ are the reaction and the frictional force, respectively, then

AMU 2011

2. Consider the situation shown in the figure. The wall is smooth but the surfaces of blocks $A$ and $B$ in contact are rough. The friction on $A$ due to $B$ in equilibrium



Question

NTA Abhyas 2020

3. Three blocks are connected, as shown in the figure. Calculate the minimum force required to move the blocks with constant velocity. The co-efficient of friction at all surfaces is $0.25$ .

[Assume that rod does not exerts force in vertical direction]

Question

NTA Abhyas 2020

4. A car is moving with speed $20 \, \, \text{m s}^{- 1}$ on a circular path of radius $100 \, \, \text{m}$ . Its speed is increasing at a rate of $3 \, \text{m s}^{- 2}$ . The magnitude of the acceleration of the car at that moment is

NTA Abhyas 2020

5. A horizontal disk is rotating with angular velocity $\omega $ about a vertical axis passing through its centre. A ball is placed at the centre of groove and pushed slightly. The velocity of the ball when it comes out of the groove-

Question

NTA Abhyas 2020

Physics Most Viewed Questions

1. A car starts from rest and accelerates at $5\, m / s ^{2}$ At $t=4\, s$, a ball is dropped out of a window by a person sitting in the car. What is the velocity and acceleration of the ball at $t =6\, s$ ? (Take $\left. g =10\, m / s ^{2}\right)$

NEET 2021 Motion in a Straight Line

2. If $E$ and $G$ respectively denote energy and gravitational constant, then $\frac{ E }{ G }$ has the dimensions of:

NEET 2021 Physical World, Units and Measurements

3. The de Broglie wavelength of an electron moving with kinetic energy of $144 \,eV$ is nearly

NEET 2020 Dual Nature of Radiation and Matter

4. A wheel with $20$ metallic spokes each $1\, m$ long is rotated with a speed of $120\, rpm$ in a plane perpendicular to a magnetic field of $0.4\, G$. The induced emf between the axle and rim of the wheel will be, $(1 G = 10^{-4}\, T)$

NEET 2020 Electromagnetic Induction

5. Calculate the acceleration of the block and trolly system shown in the figure The coefficient of kinetic friction between the trolly and the surface is $0.05. (g = 10 \,m/s^{2}$, mass of the string is negligible and no other friction exists
image

NEET 2020 Laws of Motion

Latest Updates