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GATE Prev Year : Engineering Mechanics Test-3
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Question 1
In abrasive jet machining, as the distance between the nozzle tip and the work surface increases, the material removal rate
Question 2
A solid disc of radius r rolls without slipping on a horizontal floor with angular velocity ω and angular acceleration 
. The magnitude of the acceleration of the point of contact on the disc is
. The magnitude of the acceleration of the point of contact on the disc isQuestion 3
An ejector mechanism consists of a helical compression spring having a spring constant of K = 981 × 103 N/m. it is pre-compressed by 100 mm from its free state. If it is used to eject a mass of 100 kg held on it, the mass will move up through a distance of
Question 4
Two books of mass 1 kg each are kept on a table, one over the other. The coefficient of friction on every pair of contacting surfaces is 0.3. the lower book is pulled with a horizontal force F. the minimum value of F for which slip occurs between the two books is
Question 5
The initial velocity of an object is 40 m/s. The acceleration a of the object is given by the following expression:
a = -0.1v,
where v is the instantaneous velocity of the object. The velocity of the object after 3 seconds will be ____
a = -0.1v,
where v is the instantaneous velocity of the object. The velocity of the object after 3 seconds will be ____
Question 6
A rigid body shown in the Fig.A. has a mass of 10 kg. It rotates with a uniform angular velocity ‘
’. A balancing mass of 20 kg is attached as shown in Fig. B. . The percentage increase in mass moment of inertia as a result of this addition is
’. A balancing mass of 20 kg is attached as shown in Fig. B. . The percentage increase in mass moment of inertia as a result of this addition is - 492 attempts
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