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Engineering Mechanics

Engineering Mechanics
The time of flight (t) of a projectile on a horizontal plane is given by

t = 2u. sinα/g
t = 2u. tanα/g
t = 2u. cosα/g
t = 2u/g.sinα

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Engineering Mechanics
If the body falls freely under gravity, then the gravitational acceleration is taken as

+8.9 m/s2
-8.9 m/s2
+9.8 m/s2
-9.8 m/s2

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Engineering Mechanics
The range of a projectile is maximum, when the angle of projection is

60°
30°
45°
90°

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Engineering Mechanics
A redundant frame is also called __________ frame.

None of these
Perfect
Deficient
Imperfect

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Engineering Mechanics
If a number of forces are acting at a point, their resultant is given by

√[(∑V)2 + (∑H)2]
√[(∑V)2 +(∑H)2 +2(∑V)(∑H)]
(∑V)2 +(∑H)2 +2(∑V)(∑H)
(∑V)2 + (∑H)2

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Engineering Mechanics
The unit of angular acceleration is

N-m
m/s
rad/s2
m/s2

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MORE MCQ ON Engineering Mechanics

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