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Engineering Mechanics

Engineering Mechanics
If the resultant of two equal forces has the same magnitude as either of the forces, then the angle between the two forces is

90°
30°
60°
120°

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Engineering Mechanics
The resultant of the two forces ‘P’ and ‘Q’ is ‘R’. If ‘Q’ is doubled, the new resultant is perpendicular to ‘P’. Then

Q = R
Q = 2R
P = Q
None of the listed here

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Engineering Mechanics
The periodic time (T) is given by (where, ω = Angular velocity of particle in rad/s.)

2π/ω
ω/2π
π/ω
2π × ω

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Engineering Mechanics
A pendulum which executes one beat per second is known as

Torsional pendulum
Second's pendulum
Simple pendulum
Compound pendulum

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Engineering Mechanics
When a body falls freely under gravitational force, it possesses __________ weight.

None of these
Minimum
No
Maximum

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Engineering Mechanics
The moment of inertia of a sphere of mass 'm' and radius 'r', about an axis tangential to it, is

7mr²/5
2mr²/3
2mr²/5
7mr²/3

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