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Engineering Mechanics

Engineering Mechanics
The maximum height of a projectile on a horizontal plane, is

u² sin²α/g
u² cos²α/g
u² sin²α/2g
u² cos²α/2g

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Engineering Mechanics
If a given force (or a given system of forces) acting on a body __________ the position of the body, but keeps it in equilibrium, then its effect is to produce internal stress in the body.

Does not change
Changes periodically
None of these
Change

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Engineering Mechanics
In actual machines, mechanical advantage is _________ velocity ratio.

None of these
Greater than
Equal to
Less than

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

No
Minimum
Maximum
None of these

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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 width (b), is

bd³/12
bd³/36
db³/12
db³/36

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Engineering Mechanics
The moment of inertia of a solid cone of mass ‘m’ and base radius ‘r’ about its vertical axis is

2mr²/5
3mr²/5
3mr²/10
4mr²/5

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