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Engineering Mechanics

Engineering Mechanics
One kg force is equal to

12 N
8.9 N
7.8 N
9.8 N

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Engineering Mechanics
Static friction is always __________ dynamic friction.

Less than
None of these
Equal to
Greater than

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Engineering Mechanics
The maximum frictional force, which comes into play, when a body just begins to slide over the surface of the other body, is known as

Dynamic friction
Limiting friction
Static friction
Coefficient of friction

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Engineering Mechanics
Moment of inertia of a rectangular section having width (b) and depth (d) about an axis passing through its C.G. and parallel to the depth (d), is

db³/36
db³/12
bd³/36
bd³/12

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Engineering Mechanics
The linear acceleration (a) of a body rotating along a circular path of radius (r) with an angular acceleration of α rad/s2, is

a = α.r
None of these
a = α/ r
a = r / α

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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]
√[(∑V)2 +(∑H)2 +2(∑V)(∑H)]

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