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A small bar A resting on a smooth horizontal plane is attached by threads to a point P (figure shown above) and, by means of a weightless pulley, to a weight B possessing the same mass as the bar itself. Besides, the bar is also attached to a point O by means of a light non-deformed spring of length l0 = 50cm and stiffness
31
Aug
A small bar A resting on a smooth horizontal plane is attached by threads to a point P (figure shown above) and, by means of a weightless pulley, to a weight B possessing the same mass as the bar itself. Besides, the bar is also attached to a point O by means of a light [...]
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A small bar A resting on a smooth horizontal plane is attached by threads to a point P (figure shown above) and ,
by means of a weightless pulley ,
the bar is also attached to a point O by means of a light non-deformed spring of length l0 = 50cm and stiffness ,
to a weight B possessing the same mass as the bar itself. Besides ,
Two identical blocks A and B, each of mass m=2 kg are connected to the ends of an ideal spring having force constant k=1000 N/m . System of these blocks and spring is placed on a rough floor. Coefficient of friction between blocks and floor is μ=0.5. Block B is pressed towards left so that spring gets compressed.
31
Aug
Two identical blocks A and B, each of mass m=2 kg are connected to the ends of an ideal spring having force constant k=1000 N/m . System of these blocks and spring is placed on a rough floor. Coefficient of friction between blocks and floor is μ=0.5. Block B is pressed towards left so that [...]
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A horizontal plane supports a plank with a bar of mass m placed on it and attached by a light elastic non-deformed cord of length l0 ,
to a point O. The coefficient of friction between the bar and the plank is equal to m. The plank is slowly shifted to the right until the bar ,
Two identical blocks A and B ,
If Delta U and Delta W represent the increase in internal energy and work done by the system respectively in a thermodynamic process, which of the following is true?
31
Aug
If Delta U and Delta W represent the increase in internal energy and work done by the system respectively in a thermodynamic process, which of the following is true? If Delta U and Delta W represent the increase in internal energy and work done by the system respectively in a thermodynamic process Which of the [...]
A horizontal plane supports a plank with a bar of mass m placed on it and attached by a light elastic non-deformed cord of length l0, to a point O. The coefficient of friction between the bar and the plank is equal to m. The plank is slowly shifted to the right until the bar
31
Aug
A horizontal plane supports a plank with a bar of mass m placed on it and attached by a light elastic non-deformed cord of length l0, to a point O. The coefficient of friction between the bar and the plank is equal to m. The plank is slowly shifted to the right until the bar [...]
Block of mass m are released from rest and they slide down the inclined surface as shown in figure. Show that the work done by the frictional forces on the blocks are same in all the cases. Also calculate the speeds with which the blocks reach point B. The coefficient of friction for all the surface is muk.
31
Aug
Block of mass m are released from rest and they slide down the inclined surface as shown in figure. Show that the work done by the frictional forces on the blocks are same in all the cases. Also calculate the speeds with which the blocks reach point B. The coefficient of friction for all the [...]
A uniform chain of mass m and length ℓ is at the verge of sliding under the effect of gravity of the hanging part. Find the coefficient of friction between chain and table
31
Aug
A uniform chain of mass m and length ℓ is at the verge of sliding under the effect of gravity of the hanging part. Find the coefficient of friction between chain and table A uniform chain of mass m and length ℓ is at the verge of sliding under the effect of gravity of the [...]
The value of coefficient of volume expansion of glycerin is 5 × 10^−4 K^−1 The fractional change in the density of glycerin for a rise of 40 degree C in its temperature is:-
31
Aug
The value of coefficient of volume expansion of glycerin is 5 × 10^−4 K^−1 The fractional change in the density of glycerin for a rise of 40 degree C in its temperature is:- The value of coefficient of volume expansion of glycerin is 5 × 10^−4 K^−1 The fractional change in the density of glycerin [...]
A vertical rod of mass m is kept on a wedge of mass M. If a horizontal force F acts on the wedge and the rod is constrained to move vertically, after releasing the rod-wedge system, (a) find their speeds when the wedge moves through a distance x. (b) What is the power delivered by the rod on the wedge after a time t measured from the instant of release?
31
Aug
A vertical rod of mass m is kept on a wedge of mass M. If a horizontal force F acts on the wedge and the rod is constrained to move vertically, after releasing the rod-wedge system, (a) find their speeds when the wedge moves through a distance x. (b) What is the power delivered by [...]
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(a) find their speeds when the wedge moves through a distance x. (b) What is the power delivered by the rod on the wedge after a time t measured from the instant of release? ,
A vertical rod of mass m is kept on a wedge of mass M. If a horizontal force F acts on the wedge and the rod is constrained to move vertically ,
after releasing the rod-wedge system ,
A black body at 1227 degree C emits radiations with maximum intensity at a wavelength of 5000 A˚. The temperature of the body is increased by 1000 degree C, the maximum intensity will be observe at:-
31
Aug
A black body at 1227 degree C emits radiations with maximum intensity at a wavelength of 5000 A˚. The temperature of the body is increased by 1000 degree C, the maximum intensity will be observe at:- A black body at 1227 degree C emits radiations with maximum intensity at a wavelength of 5000 A˚. The [...]
A block of mass m is slowly pulled along a curved surface from position 1 and 2. If the coefficient of kinetic friction between the block and surface is mu, find the work done by the applied force.
31
Aug
A block of mass m is slowly pulled along a curved surface from position 1 and 2. If the coefficient of kinetic friction between the block and surface is mu, find the work done by the applied force. A block of mass m is slowly pulled along a curved surface from position 1 and 2. [...]