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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)
An amount of air contained in a rigid container is at T1 = 300 K. After adding 450 kJ of heat, the air temperature increases to T2 = 430 K. Determine the mass of air, m [kg],
Find out the centroid of an area of a semicircle: Find out the centroid of an area of a semicircle illustrated in Figure. Solution You shall note that it is not p
Match plate pattern These are extensions of the previous type. Here the cope and drag patterns along with the gating and the risering are mounted on a single matching metal or
What are relevant design considerations? The relevant design considerations may be summarized as follows: a. Main reinforcement (uniformly distributed) is placed in a longit
Evaluate maximum shear stress: Derive equation subjected to combined bending and torsion for finding out maximum shear stress and its equivalent twisting moment.
Downward force on sleeve must be +OR - Sy/x
Design a hydrocooling unit that can cool fruits and vegetables from 30 to 5 degrees Celsius at a rate of 20,000 kg/hr under the following conditions: The unit will be of flood typ
Prove that energy is a property of system
what is tangential force in metal cutting
Determine the loss-by-defect and loss-by-dispersion Given, Annual production = 1,00,000 units Specification = 20 ± 4 i.e. m = 20, Δ = 4 Cost of repairing or resetting a
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