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Under the action of constant force, a 2kg block moves such that its position x as a function of time is given by X=t^3/3 ,where x in meters and t in sec , the workdone by force in first 2 seconds isA 26.6 jB 3.3 jC 16 jD 32 jSolution) v=dx/dt=t^2,a=dv/dt=2t,f(t)=ma(t),w=∫f(t)*v(t) dt (from x=0 to x=2 sec)
Planning A New Airport: Elements of Airport Planning The elements of planning for a new airport are : (a) Demand Forecast (b) Site Selection (c)
a concrete column of 350mm diameter is reinforced with 4 bars of 25mm diameter . find the stress when the concrete is subjected to a stress of 4.5 MPa . also find the safe load in
Thermal efficiency and compression ratio: Calculate thermal efficiency and compression ratio for automobile working on otto cycle. If energy generated per cycle is thrice whi
Calculate the Horizontal and Vertical Components A jet aircraft pulls up into a vertical curve as shown in the figure. As it passes the position where Θ = 30°, its speed is 10
Q. Use of Stainless Steels in welding? Considerable care must be exercised to obtain sound, crack-free welds. These difficulties are pronounced when welding very high-chromium
how degree of super heat reduces specific steam consumption
It shows the test rig for the assignment of an indeterminate structure at the Materials Lab. The indeterminate structure consists of three pin-jointed members made of the same stee
Motor shall operate successfully at rated load with a voltage variation of plus or minus ten percent and frequency variation of plus or minus five percent, or combined variation of
The connecting rod of a four stroke cycle Diesel engine is of circular section and of length 550 mm. The diameter and stroke of the cylinder are 150 mm and 240 mm respectively. The
(a) A steel bolt 650 mm 2 cross-sectional area passes centrally through a copper tube to 1200mm 2 cross-sectional area. The tube is 500mm long and closed by rigid washers, which
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