Mechanics | Relativity Answers

a body travelles in circular path of radius 7 metre caluclate distance travelled by the body for 1 complete revolution .also find displacement

After an impact involving a non-functioning satellite, a paint chip leaves the surface of the satellite at a velocity of +96m/s for 10 seconds.Then the object is hit by an asteroid and the force causes a 180 degree turn and the chip moves for 15 seconds at -58m/s. What is the overall change in position for the 25 seconds?

Problem: Glycerin has density of 1260kg/m3 and a kinematic viscosity of 0.001183m2/s. What shear stress is required to deform this element at a strain rate of 104s˗1?

Problem: Carbon tetrachloride at 20 0C has a viscosity of 0.000967Pa.s. What shear stress is required to deform this fluid at a strain rate of 5000s˗1?

Problem: A liquid at 20 0C has a density of 798.4kg/m3 and a kinematic viscosity of 2.3×10-6m2/s. Determine its (i) specific weight and (ii) absolute viscosity.

Problem: Carbon tetrachloride at 20 0C, has an absolute viscosity of 9.67×10-4Pa.s and a kinematic viscosity of 6.08×10-7m2/s. Calculate its density and specific weight.

Problem: The density of a fluid is 1257.5kg/m3 and its absolute viscosity is 1.50Pa.s. Calculate its specific weight and kinematic viscosity.

Problem: Due to an increase in pressure of 10Pa in a liquid, the density increases by 0.02%. What is its bulk modulus of elasticity? In this case, use the formula for the bulk modulus of elasticity in terms of density change.

Problem: Find the change in volume of 1m3 of water when subjected to pressure increase of 35MPa .the bulk modulus of elasticity of water is 2.2×109Pa. Also estimate the volume of water after the pressure is applied

Problem: what pressure must be exerted on 20L of water at 20 0C to change its volume to 18.7L? The bulk modulus of elasticity of water at this temperature is 2.2×109Pa