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Engineering Mechanics

Engineering Mechanics
The moment of inertia of a rectangular section 3 cm wide and 4 cm deep about X-X axis is

20 cm4
12 cm4
16 cm4
9 cm4

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Engineering Mechanics
The potential energy of a vertically raised body is __________ the kinetic energy of a vertically falling body.

None of these
Equal to
Less than
Greater than

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Engineering Mechanics
If u₁ and u₂ are the velocities of two moving bodies in the same direction before impact and v₁ and v₂ are their velocities after impact, then coefficient of restitution is given by

(u₁ - u₂)/(v₁ - v₂)
(v₂ - v₁)/(u₁ - u₂)
(v₁ - v₂)/(u₁ - u₂)
(u₂ + u₁)/(v₂ + v₁)

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Engineering Mechanics
The moment of inertia of a thin spherical shell of mass m and radius r, about its diameter is

2mr²/5
mr²/3
3mr²/5
2mr²/3

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Engineering Mechanics
The wheels of a moving car possess

Potential energy only
Kinetic energy of translation and rotation both
Kinetic energy of translation only
Kinetic energy of rotation only

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Engineering Mechanics
The moment of inertia of a square of side a about its diagonal is

a²/8
a³/12
a⁴/16
a⁴/12

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MORE MCQ ON Engineering Mechanics

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