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A circular disc of moment of inertia It is rotating in a horizontal plane about its symmetry axis with a constant angular velocity ωi. Another disc of moment of inertia Ib is dropped co-axially onto the rotating disc. Initially, the second disc has zero angular speed. Eventually, both the discs rotate with a constant angular speed ωf. The energy lost by the initially rotating disc due to friction.
29
Aug
A circular disc of moment of inertia It is rotating in a horizontal plane about its symmetry axis with a constant angular velocity ωi. Another disc of moment of inertia Ib is dropped co-axially onto the rotating disc. Initially, the second disc has zero angular speed. Eventually, both the discs rotate with a constant angular [...]
When a mass is rotating in a plane about a fixed point, its angular momentum is directed along
29
Aug
When a mass is rotating in a plane about a fixed point, its angular momentum is directed along its angular momentum is directed along When a mass is rotating in a plane about a fixed point August 29, 2020 Category: Chapter 11 - Rotational Mechanics , NEET Last 32 Years Solved 1988 - 2019 Physics [...]
A block of mass m is placed on an inclined plane. With what acceleration A towards right should the system move on a horizontal surface so that m does not slide on the surface of inclined plane? Also calculate the force supplied by wedge on the block. Assume all surfaces are smooth.
29
Aug
A block of mass m is placed on an inclined plane. With what acceleration A towards right should the system move on a horizontal surface so that m does not slide on the surface of inclined plane? Also calculate the force supplied by wedge on the block. Assume all surfaces are smooth. find the acceleration [...]
A mass, m, moves in a circle on a smooth horizontal plane with velocity, V0, at a radius, R0. The mass is attached to a string which passes through a smooth hole in the plane as shown. The tension in the string is increased gradually and finally m moves in a circle of radius 2/R0. The final value of the kinetic energy is
29
Aug
A mass, m, moves in a circle on a smooth horizontal plane with velocity, V0, at a radius, R0. The mass is attached to a string which passes through a smooth hole in the plane as shown. The tension in the string is increased gradually and finally m moves in a circle of radius 2/R0. [...]
An open capillary tube contains a drop of water. When the tube is in its vertical position, the drop forms a column with a length of a 2cm, b. 4cm, and c. 2.98cm. The internal diameter of the capillary tube is 1 mm. Determine the radii of curvature of the upper and lower meniscuses in each case. Consider the wetting to be complete. Surface tension of water =0.0075 N/m
29
Aug
An open capillary tube contains a drop of water. When the tube is in its vertical position, the drop forms a column with a length of a 2cm, b. 4cm, and c. 2.98cm. The internal diameter of the capillary tube is 1 mm. Determine the radii of curvature of the upper and lower meniscuses in [...]
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A barometer contains two uniform capillaries of radii 1.44×10 ^−3 m. If the height of liquid in narrow tube is 0.2 m more than that in wide tube ,
An open capillary tube contains a drop of water. When the tube is in its vertical position ,
b. 4cm ,
calculate the true pressure difference. Density of liquid=10^3 kg/m^3 ,
surface tension =72×10^−3 N/m and g=9.8m/s^−12. ,
the drop forms a column with a length of a 2cm ,
Two smooth blocks of masses m and m’ connected by a light inextensible strings are moving on a smooth wedge of mass M. If a force F acts on the wedge the blocks do not slide relative to the wedge. Find the (a) acceleration of the wedge and (b) value of F.
29
Aug
Two smooth blocks of masses m and m’ connected by a light inextensible strings are moving on a smooth wedge of mass M. If a force F acts on the wedge the blocks do not slide relative to the wedge. Find the (a) acceleration of the wedge and (b) value of F. find the acceleration [...]
Two discs of same moment of inertia rotating about their regular axis passing through centre and perpendicular to the plane of disc with angular velocities ω1 and ω2. They are brought into contact face to face coinciding the axis of rotation. The expression for loss coinciding of energy during this process is:
29
Aug
Two discs of same moment of inertia rotating about their regular axis passing through centre and perpendicular to the plane of disc with angular velocities ω1 and ω2. They are brought into contact face to face coinciding the axis of rotation. The expression for loss coinciding of energy during this process is: initial position and [...]
A barometer contains two uniform capillaries of radii 1.44×10 ^−3 m. If the height of liquid in narrow tube is 0.2 m more than that in wide tube, calculate the true pressure difference. Density of liquid=10^3 kg/m^3 , surface tension =72×10^−3 N/m and g=9.8m/s^−12.
29
Aug
A barometer contains two uniform capillaries of radii 1.44×10 ^−3 m. If the height of liquid in narrow tube is 0.2 m more than that in wide tube, calculate the true pressure difference. Density of liquid=10^3 kg/m^3 , surface tension =72×10^−3 N/m and g=9.8m/s^−12. A barometer contains two uniform capillaries of radii 1.44×10 ^−3 m. [...]
If the pulley is massless and moves with an upward acceleration a 0 , find the acceleration of m1 and m2 w.r.t. to elevator.
29
Aug
If the pulley is massless and moves with an upward acceleration a 0 , find the acceleration of m1 and m2 w.r.t. to elevator. find the acceleration of m1 and m2 w.r.t. to elevator. If the pulley is massless and moves with an upward acceleration a 0 August 29, 2020 Category: Uncategorised (JEE Advanced Physics [...]
A glass plate of length 10 cm and breadth 1.54 cm and thickness 0.20 cm weighs 8.2 gm in the air. It is held vertically with the long side horizontal and the lower half under water. Find the apparent weight of the plate. [Surface tension of water = 73 dyne per cm g = 980 cm/sec^2]
29
Aug
A glass plate of length 10 cm and breadth 1.54 cm and thickness 0.20 cm weighs 8.2 gm in the air. It is held vertically with the long side horizontal and the lower half under water. Find the apparent weight of the plate. [Surface tension of water = 73 dyne per cm g = 980 [...]