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Engineering Mechanics

Engineering Mechanics
Moment of inertia of a triangular section of base (b) and height (h) about an axis through its base, is

bh3/12
bh3/4
bh3/36
bh3/8

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Engineering Mechanics
The total motion possessed by a body, is called

Impulsive force
Momentum
Mass
Weight

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Engineering Mechanics
The centre of gravity a T-section 100 mm × 150 mm × 50 mm from its bottom is

50 mm
75 mm
87.5 mm
125 mm

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Engineering Mechanics
Moment of inertia of a triangular section of base (b) and height (h) about an axis passing through its vertex and parallel to the base, is __________ than that passing through its C.G. and parallel to the base.

Two times
Nine times
Four times
Six times

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Engineering Mechanics
The ratio of static friction to dynamic friction is always

None of these
Greater than one
Equal to one
Less than one

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Engineering Mechanics
The law of the machine is (where P = Effort applied to lift the load, m = A constant which is equal to the slope of the line, W = Load lifted, and C = Another constant which represents the machine friction.)

P = mW + C
P = m/W + C
P = C - mW
P = mW - C

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