ISRO Mechanical Engg.: Engineering Mechanics Booster Quiz 1

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Question 1

The reading of a spring balance is from 0 to 200 N and is 10 cm long. A body suspended from the spring balance is observed to oscillate vertically at 2 Hz. The mass of the body is nearly

• A22.5 kg
• B12.5 kg
• C37 kg
• D45 kg

Question 2

For two bodies having direct impact, coefficient of restitution is given by ______.

• A
• B
• C
• DNone of the above

Question 3

Two metallic blocks having masses in the ratio 2:3 are made to slide down a friction less inclined plane starting initially from rest position. When these blocks reach the bottom of the inclined plane, they will have their kinetic energies in the ratio

• A2:3
• B3:5
• C3:2
• D7:4

Question 4

Two blocks with masses M and m are in contact with each other and are resting on a horizontal frictionless floor. When horizontal force F is applied to the heavier, the blocks accelerate to the right. The force between the two blocks are

• AmF/(M+m)
• BMF/m
• CmF/M
• D(M+m)F/m

Question 5

A three bar truss to resist a service load P = 100 kN is shown in the figure. Use a load factor of 2 and consider all three members to have equal cross-section areas. The yield stress of the material of which the members are fabricated is 400 MPa. The area of cross section of each truss member is

• A
• B
• C
• D

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