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A uniform horizontal circular platform of mass 200kg is rotating at 10 rpm about a vertical axis passing through its center. A boy of mass 50kg is standing at its edge. If the boy moves to the center of the platform, the frequency of rotation would become
23
Oct
A uniform horizontal circular platform of mass 200kg is rotating at 10 rpm about a vertical axis passing through its center. A boy of mass 50kg is standing at its edge. If the boy moves to the center of the platform, the frequency of rotation would become A solid sphere is rotating about a diameter [...]
If radius of the earth becomes to half of its present value with its mass remaining the same, the duration of one day will become
23
Oct
If radius of the earth becomes to half of its present value with its mass remaining the same, the duration of one day will become If radius of the earth becomes to half of its present value with its mass remaining the same the duration of one day will become October 23, 2020 Category: Cengage [...]
A wire is made by attaching two segments together end to end. One segment is made of aluminium and the other is steel. The effective coefficient of linear expansion of the two segment
23
Oct
A wire is made by attaching two segments together end to end. One segment is made of aluminium and the other is steel. The effective coefficient of linear expansion of the two segment A wire is made by attaching two segments together end to end. One segment is made of aluminium and the other is [...]
Two elastic rods are joined between fixed supports as shown in the figure. Condition for no change in the length of individual rods with the increase of temperature (alpha 1, alpha 2 = linear expansion coefficient,
23
Oct
Two elastic rods are joined between fixed supports as shown in the figure. Condition for no change in the length of individual rods with the increase of temperature (alpha 1, alpha 2 = linear expansion coefficient, alpha 2 = linear expansion coefficient Two elastic rods are joined between fixed supports as shown in the figure. [...]
A man standing on a platform holds weight in his outstretched arms. The system rotates freely about a central vertical axis. If he now draws the weights inward close to his body
23
Oct
A man standing on a platform holds weight in his outstretched arms. The system rotates freely about a central vertical axis. If he now draws the weights inward close to his body A man standing on a platform holds weight in his outstretched arms. The system rotates freely about a central vertical axis. If he [...]
A large horizontal surface moves up and down in S.H.M. with an amplitude of 1cm. If a mass of 10kg (which is placed on the surface ) is to remain continuously in contact with it, the maximum frequency of S.H.M. will be
23
Oct
A large horizontal surface moves up and down in S.H.M. with an amplitude of 1cm. If a mass of 10kg (which is placed on the surface ) is to remain continuously in contact with it, the maximum frequency of S.H.M. will be A large horizontal surface moves up and down in S.H.M. with an amplitude [...]
If earth suddenly stops rotating about its own axis, the increase in its temperature will be (Here, R = radius of the Earth, omega = angular velocity of rotation of the Earth, J = mechanical
23
Oct
If earth suddenly stops rotating about its own axis, the increase in its temperature will be (Here, R = radius of the Earth, omega = angular velocity of rotation of the Earth, J = mechanical If earth suddenly stops rotating about its own axis J = mechanical omega = angular velocity of rotation of the [...]
In an industrial process, 10 kg of water per hour is to be heated from 20 C to 80 C. To do this, steam at 150 C is passed from a boiler into a copper coil immersed in water. The steam
23
Oct
In an industrial process, 10 kg of water per hour is to be heated from 20 C to 80 C. To do this, steam at 150 C is passed from a boiler into a copper coil immersed in water. The steam 10 kg of water per hour is to be heated from 20 C to [...]
Two springs of force constant k and 2k are connected to a mass shown in figure. The frequency of oscillation of the mass is :
23
Oct
Two springs of force constant k and 2k are connected to a mass shown in figure. The frequency of oscillation of the mass is : Two springs of force constant k and 2k are connected to a mass shown in figure. The frequency of oscillation of the mass is : October 23, 2020 Category: AIIMS [...]
The temperature of equal masses of three different liquids A, B and C are 12 C, 19 C and 28 C, respectively. The temperature when A and B are mixed is 16 C and that when B and C
23
Oct
The temperature of equal masses of three different liquids A, B and C are 12 C, 19 C and 28 C, respectively. The temperature when A and B are mixed is 16 C and that when B and C 19 C and 28 C B and C are 12 C respectively. The temperature when A [...]