Determine the C.G. of square pyramid of side ‘a’ as shown in fig.1.
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A block weighing 2500 N rest on a horizontal plane for which coefficient of friction is 0.20. This block is pulled by a force of 1000 an acting at an angle of 30 degrees to the horizontal. Find ...Read more
Find the moment of inertia of a hollow section shown in Fig.25 about an axis passing through its center of gravity or parallel X-X axis.
Determine whether the block shown is in equilibrium and find the magnitude and direction of the friction force when θ = 40° and P = 400 N.
Find the forces in the members of a truss as shown in figure.
Member CB of the vise shown exerts on block B a force P directed along line CB. Knowing that P must have a 1200N horizontal component, determine (a) the magnitude of the force P, (b) its vertical component.
A steel ball of diameter 150mm rests centrally over concrete cube of size 150 mm. Determine the centre of gravity of the system. Take weight of concrete as 2500N/m2 and that of steel 800N/m3.
Knowing that the tension in rope AC is 365 N, determine the resultant of the three forces exerted at point C of post BC.
A helicopter is moving horizontally at 90 km.p.h. at a height of 200 m towards a target on the ground, which is intended to be shelled. Estimate the distance from the target, where the shell must be released ...Read more
4. A lifting machine having velocity ratio 28 starts raising load of 6420 N on applying an effort of 450N to it. If suddenly the effort is removed find whether the load comes down or not. 5. For ...Read more
