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A particle is executing simple harmonic motion (SHM) of amplitude A, along the x-axis, about x = 0. When its potential Energy (PE) equals kinetic energy (KE), the position of the particle will be :
06
Nov
A particle is executing simple harmonic motion (SHM) of amplitude A, along the x-axis, about x = 0. When its potential Energy (PE) equals kinetic energy (KE), the position of the particle will be : A particle is executing simple harmonic motion (SHM) of amplitude A about x = 0. When its potential Energy (PE) [...]
A rod of mass ‘M’ and length ‘2L’ is suspended at its middle by a wire. It exhibits torsional oscillations, if two masses each of ‘m’ are attached at distance ‘L/2’ from its centre on both sides, it reduces the oscillation frequency by 20%. The value of ratio m/M is close to :
06
Nov
A rod of mass ‘M’ and length ‘2L’ is suspended at its middle by a wire. It exhibits torsional oscillations, if two masses each of ‘m’ are attached at distance ‘L/2’ from its centre on both sides, it reduces the oscillation frequency by 20%. The value of ratio m/M is close to : A rod [...]
A simple pendulum oscillating in air has period T. The bob of the pendulum is completely immersed in a non-viscous liquid. The density of the liquid is 16/1 th of material of the bob. If the bob is inside liquid all the time, its period of oscillation in this liquid is:
06
Nov
A simple pendulum oscillating in air has period T. The bob of the pendulum is completely immersed in a non-viscous liquid. The density of the liquid is 16/1 th of material of the bob. If the bob is inside liquid all the time, its period of oscillation in this liquid is: coefficient of viscosity of [...]
The displacement of a damped harmonic oscillator is given by x(t) = e^–0.1t cos(10πt + ϕ) Here t is in seconds. The time taken for its amplitude of vibration to drop to half of its initial value is close to
06
Nov
The displacement of a damped harmonic oscillator is given by x(t) = e^–0.1t cos(10πt + ϕ) Here t is in seconds. The time taken for its amplitude of vibration to drop to half of its initial value is close to coefficient of viscosity of water =1 mPas). the Reynolds number for the flow is of [...]
A spring whose unstretched length is l has a force constant k. The spring is cute into two pieces of unstretched lengths l1 and l2 where, l 1 = nl2 and n is an integer. The ratio k2/k1 of the corresponding force constants, k1 and k2 will be:
06
Nov
A spring whose unstretched length is l has a force constant k. The spring is cute into two pieces of unstretched lengths l1 and l2 where, l 1 = nl2 and n is an integer. The ratio k2/k1 of the corresponding force constants, k1 and k2 will be: A spring whose unstretched length is l [...]
A massless spring (k=800N/m), attached with a mass (500g) is completely immersed in 1 kg of water. The spring is stretched by 2 cm and released so that it starts vibrating. What would be the order of magnitude of the change in the temperature of water when the vibrations stop completely? (Assume that the water container and spring receive negligible heat and specific heat of mass =400 J/kg K, specific heat of water =4184 J/kg K)
06
Nov
A massless spring (k=800N/m), attached with a mass (500g) is completely immersed in 1 kg of water. The spring is stretched by 2 cm and released so that it starts vibrating. What would be the order of magnitude of the change in the temperature of water when the vibrations stop completely? (Assume that the water [...]
A damped harmonic oscillator has a frequency of 5 oscillations per second. The amplitude drops to half its value for every 10 oscillations. The time it will take to drop to 1000/1 of the original amplitude is close to
06
Nov
A damped harmonic oscillator has a frequency of 5 oscillations per second. The amplitude drops to half its value for every 10 oscillations. The time it will take to drop to 1000/1 of the original amplitude is close to coefficient of viscosity of water =1 mPas). the Reynolds number for the flow is of the [...]
Water is flowing continuously from a tap having an internal diameter 8 x 10^−3 m. The water velocity as it leaves the tap is 0.4 m/s . The diameter of the water stream at a distance 2 x 10^−1 m below the tap is close to
06
Nov
Water is flowing continuously from a tap having an internal diameter 8 x 10^−3 m. The water velocity as it leaves the tap is 0.4 m/s . The diameter of the water stream at a distance 2 x 10^−1 m below the tap is close to coefficient of viscosity of water =1 mPas). the Reynolds [...]
If a ball of steel (density ρ=7.8g/cm^3) attains a terminal velocity of 10cm/s when falling in a tank of water (coefficient of viscosity, ηwater = 8.5×10^−4Ps s), then its terminal velocity in glycerine (ρ=12g/cm^2, η=13.2 Pas) would be nearly
06
Nov
If a ball of steel (density ρ=7.8g/cm^3) attains a terminal velocity of 10cm/s when falling in a tank of water (coefficient of viscosity, ηwater = 8.5×10^−4Ps s), then its terminal velocity in glycerine (ρ=12g/cm^2, η=13.2 Pas) would be nearly If a ball of steel (density ρ=7.8g/cm^3) attains a terminal velocity of 10cm/s when falling in [...]
A thin liquid film formed between a U-shaped wire and a light slider supports a weight of 1.5×10^−2 N (see figure). The length of the slider is 30cm and its weight negligible. The surface tension of the liquid film is
06
Nov
A thin liquid film formed between a U-shaped wire and a light slider supports a weight of 1.5×10^−2 N (see figure). The length of the slider is 30cm and its weight negligible. The surface tension of the liquid film is coefficient of viscosity of water =1 mPas). the Reynolds number for the flow is of [...]