Cengage JEE Mains Physics by B.M Sharma
A uniform circular disc of radius 50 cm at rest is free to turn about an axis which is perpendicular to its plane and passes through its centre. It is subjected to a torque which produces a constant angular acceleration of 2.0 rads^−2. Its net acceleration in ms^−2 at the end of 2.0 s is approximately:
16
Sep
A uniform circular disc of radius 50 cm at rest is free to turn about an axis which is perpendicular to its plane and passes through its centre. It is subjected to a torque which produces a constant angular acceleration of 2.0 rads^−2. Its net acceleration in ms^−2 at the end of 2.0 s is [...]
A rope is wound around a hollow cylinder of mass 3kg and radius 40cm. What is the angular acceleration of the cylinder if the rope is pulled with a force of 30N?
16
Sep
A rope is wound around a hollow cylinder of mass 3kg and radius 40cm. What is the angular acceleration of the cylinder if the rope is pulled with a force of 30N? A rope is wound around a hollow cylinder of mass 3kg and radius 40cm. What is the angular acceleration of the cylinder if [...]
A small object of uniform density rolls up a curved surface with an initial velocity v′. It reaches up to a maximum height of 4g/3v^2 with respect to the initial position. The object is
16
Sep
A small object of uniform density rolls up a curved surface with an initial velocity v′. It reaches up to a maximum height of 4g/3v^2 with respect to the initial position. The object is A small object of uniform density rolls up a curved surface with an initial velocity v′. It reaches up to a [...]
The ratio of the acceleration for a solid sphere (mass ′m′ and radius ′R′) rolling down an incline of angle ‘θ’ without slipping and slipping down the incline without rolling is.
16
Sep
The ratio of the acceleration for a solid sphere (mass ′m′ and radius ′R′) rolling down an incline of angle ‘θ’ without slipping and slipping down the incline without rolling is. The ratio of the acceleration for a solid sphere (mass ′m′ and radius ′R′) rolling down an incline of angle 'θ' without slipping and [...]
A disc and a solid sphere of same radius but different masses roll off on two inclined planes of the same altitude and length. Which one of the two objects gets to the bottom of the plane first ?
16
Sep
A disc and a solid sphere of same radius but different masses roll off on two inclined planes of the same altitude and length. Which one of the two objects gets to the bottom of the plane first ? A disc and a solid sphere of same radius but different masses roll off on two [...]
B1, B2, and B3 are three balloons ascending with velocities v,2v, and 3v, respectively. If a bomb is dropped from each when they are at the same height, then
15
Sep
B1, B2, and B3 are three balloons ascending with velocities v,2v, and 3v, respectively. If a bomb is dropped from each when they are at the same height, then 2v and 3v and B3 are three balloons ascending with velocities v B1 B2 respectively. If a bomb is dropped from each when they are at [...]
A body sliding on a smooth inclined plane required 4 s to reach the bottom, starting from rest at the top. How much time does it take to cover one-fourth the distance starting from rest at the top?
15
Sep
A body sliding on a smooth inclined plane required 4 s to reach the bottom, starting from rest at the top. How much time does it take to cover one-fourth the distance starting from rest at the top? A body sliding on a smooth inclined plane required 4 s to reach the bottom starting from [...]
Statement I: In the three cases shown in the figure, force exerted by liquid on three vessels is the same. Statement II: Pressure at the bottom in each case is same.
15
Sep
Statement I: In the three cases shown in the figure, force exerted by liquid on three vessels is the same. Statement II: Pressure at the bottom in each case is same. force exerted by liquid on three vessels is the same. Statement II: Pressure at the bottom in each case is same. Statement I: In [...]
Statement 1 : In taking into account the fact that any object, which floats, must, have an average density less than that of water, during World War I, a number of cargo vessels are made of concrete. Statement 2 : Concrete cargo vessels were filled with air.
15
Sep
Statement 1 : In taking into account the fact that any object, which floats, must, have an average density less than that of water, during World War I, a number of cargo vessels are made of concrete. Statement 2 : Concrete cargo vessels were filled with air. a number of cargo vessels are made of [...]
Statement I: Imagine holding two identical bricks under water. Brick A is completely submerged just below the surface of water, while brick B is at a greater depth. The magnitude of force exerted by the person (on the brick) to hold brick B in place is the same as magnitude of force. exerted by the person (on the brick) to hold brick A in place. Statement II: The magnitude of buoyant force on a brick completely submerged in water is equal to the magnitude of weight of water it displaced and does not depend on the depth of the brick in water.
15
Sep
Statement I: Imagine holding two identical bricks under water. Brick A is completely submerged just below the surface of water, while brick B is at a greater depth. The magnitude of force exerted by the person (on the brick) to hold brick B in place is the same as magnitude of force. exerted by the [...]
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Cengage JEE Mains Physics by B.M Sharma
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Chapter 12 - Fluid Mechanics, Surface Tension and Viscosity
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A capillary tube is attached horizontally to a constant pressure head arrangement. If the radius of the capillary tube is increased by 10% ,
Statement I: Imagine holding two identical bricks under water. Brick A is completely submerged just below the surface of water ,
then the rate of flow of the liquid shall change nearly by ,