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GATE Prev Year : Engineering Mechanics Test-7
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Question 1
The degree of indeterminacy is specified by:
Question 2
A block weighing 981 N is resting on a horizontal surface. The coefficient of friction between the block and the horizontal surface is μ = 0.2. A vertical cable attached to the block provides partial support as shown. A man can pull horizontally with a force of 100 N. What will be the tension, T (in N) in the cable if the man is just able to move the block to the right?
Question 3
Two steel truss members, AC and BC each having cross sectional area of 100mm2 are subjected to a horizontal force F as shown in figure All the joints are hinged
If F = 1 kN, the magnitude of the vertical reaction force developed at the point B in kN is
Question 4
Two steel truss members, AC and BC each having cross sectional area of 100mm2 are subjected to a horizontal force F as shown in figure All the joints are hinged
The maximum force F in kN that can be applied at C such that the axial stress in any of the truss members DOES NOT exceed 100 MPa is
Question 5
A reel of mass ‘m’ and radius of gyration ‘k’ is rolling down smoothly from rest with one end of the thread wound on it held in the ceiling as depicted in the figure. Consider the thickness of the thread and its mass negligible in comparison with radius ‘r’ of the hub and the reel mass ‘m’. Symbol ‘g’ represents the acceleration due to gravity.
The linear acceleration of the reel is
Question 6
A reel of mass ‘m’ and radius of gyration ‘k’ is rolling down smoothly from rest with one end of the thread wound on it held in the ceiling as depicted in the figure. Consider the thickness of the thread and its mass negligible in comparison with radius ‘r’ of the hub and the reel mass ‘m’. Symbol ‘g’ represents the acceleration due to gravity.
The tension in the thread is
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