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A spring extends by 5 centimeters when loaded vertically with 2.5kg of weight. A new weight of 2kg was attached to it and was displaced 6cm from its new equilibrium position and was released from rest. Determine the frequency of vibration in Hz
Consider a small spring about 30mm long, welded to a stationary table (ground) so that it is fixed at the point with a 12mm bolt welded to the other end which is free to move. The mass of this system is about 49.2×10–³kg . The spring stiffness is measured to be k=857.8N/m. Calculate the natural frequency and period. Also determine the maximum amplitude of the response if the spring is initially deflected 10mm.
Suppose the frequency of a system is measured to be 2rad/s and after the addition of of another mass 1kg, the frequency is measured to be 1rad/s. Calculate the mass and stiffness.
The tensions on the tight side and slack side of the flat belt are 750N and 250N
respectively. If the speed of the belt is 2m/s and the coefficient of friction between the
belt and the pulley is 0.3, neglecting centrifugal tension,
Determine; (i) Power transmitted at this speed in kW.
(ii) Angle of lap in degrees
Determine the force in each member of the truss shown. State whether each member is in tension or compression and tabulate the results.
To check the radius of a railroad curve, the effect of a 2-lb weight is observed to be 20.7 lb on a spring scale suspended from the roof of an experimental car rounding the curve at 40mph. what is the radius of the curve?
A homogenous triangular plate weighing 64.4lb is attached to a rigid vertical support by two weightless links. At the position shown, the plate has an upward velocity of 12 ft/s. compute the total force acting on pin C
A room (10 m x 5 m x 5 m) contains moist air at 38°C /1 bar with relative humidity 70 %. Determine the: (i) Specific humidity. (ii) Dew point temperature.(ii) Mass of dry air and water vapour with the sir in the room. (tv) Determine the quantity of water vapour that will condense out when the roo temperature is brought down to 10°C.
Estimate the Joule-Thomson coefficient of steam at (i) 3 MPa and 300°°C and (ii) 6 MPa and 500°C.
Dry products of combustion of a coal have the following volumetric composition 11 % CO2, 3.5 % O2 and 83.5 % N2, at atmospheric pressure 1 bar and temperature 27°C. Calculate : (i) The gravimetric analysis, (ii) The gas constant for the mixture, (iii) The equivalent molecular weight, (iv) Of the mixture specific heat.
