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GATE 2019 Engineering Mechanics Quiz 3
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Question 1
A lead ball with certain velocity is made to strike a wall, it falls down; but a rubber ball of the same mass and with same velocity strikes the same wall, it rebounds. Select the reason from the following:
Question 2
The coefficient of restitution of a perfectly plastic impact is
Question 3
Two block of mass 5kg and 3kg moving in a speed of 10m/s and 15m/s respectively. After perfectly elastic impact between two bodies the velocity of 5kg block is 12m/s. What will be the final velocity of 3kg block in m/s?
Question 4
Two rigid bodies of mass 5 kg and 4 kg are at rest on a frictionless surface until acted upon by a force of 36 N as shown in the figure. The contact force generated between the two bodies is
Question 5
The 2 kg mass C moving horizontally to the right, with a velocity of 5 m/s, strikes the 8 kg mass B at the lower end of the rigid massless rod AB. The rod is suspended from a frictionless hinge at A and is initially at rest. If the coefficient of restitution between mass C and mass B is one, determine the angular velocity of the rod AB immediately after impact.
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 - 734 attempts
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Feb 4ESE & GATE CE
