If a number of forces are acting at a point, their resultant will be inclined at an angle 'θ' with the horizontal, such that

Engineering Mechanics
If a number of forces are acting at a point, their resultant will be inclined at an angle 'θ' with the horizontal, such that

tanθ = ΣV × ΣH

tanθ = √(ΣV + ΣH)

tanθ = ΣV/ΣH

tanθ = ΣH/ΣV

tanθ = ΣV × ΣH

tanθ = √(ΣV + ΣH)

tanθ = ΣV/ΣH

tanθ = ΣH/ΣV

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Engineering Mechanics
The algebraic sum of moments of the forces forming couple about any point in their plane is

Equal to the moment of the couple

Both of above are wrong

Constant

Both of above are correct

Equal to the moment of the couple

Both of above are wrong

Constant

Both of above are correct

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Engineering Mechanics
The centre of percussion of the homogeneous rod of length ‘L’ suspended at the top will be

L/3

3L/4

L/2

2L/3

L/3

3L/4

L/2

2L/3

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Engineering Mechanics
For a self locking machine, the efficiency must be

1

Greater than 50%

Equal to 50%

Less than 50%

1

Greater than 50%

Equal to 50%

Less than 50%

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Engineering Mechanics
In ideal machines, mechanical advantage is __________ velocity ratio.

None of these

Equal to

Greater than

Less than

None of these

Equal to

Greater than

Less than

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Engineering Mechanics
Which is the correct statement about law of polygon of forces?

If any number of forces acting at a point can be represented in direction and magnitude by the sides of a polygon taken in order, then the forces are in equilibrium

If any number of forces acting at a point can be represented by the sides of a polygon taken in order, then the forces are in equilibrium

If any number of forces acting at a point can be represented in direction and magnitude by the sides of a polygon, then the forces are in equilibrium

If a polygon representing forces acting at a point is closed then forces are in equilibrium

If any number of forces acting at a point can be represented in direction and magnitude by the sides of a polygon taken in order, then the forces are in equilibrium

If any number of forces acting at a point can be represented by the sides of a polygon taken in order, then the forces are in equilibrium

If any number of forces acting at a point can be represented in direction and magnitude by the sides of a polygon, then the forces are in equilibrium

If a polygon representing forces acting at a point is closed then forces are in equilibrium

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Engineering Mechanics

Engineering Mechanics If a number of forces are acting at a point, their resultant will be inclined at an angle 'θ' with the horizontal, such that

Engineering Mechanics The algebraic sum of moments of the forces forming couple about any point in their plane is

Engineering Mechanics The centre of percussion of the homogeneous rod of length ‘L’ suspended at the top will be

Engineering Mechanics For a self locking machine, the efficiency must be

Engineering Mechanics In ideal machines, mechanical advantage is __________ velocity ratio.

Engineering Mechanics Which is the correct statement about law of polygon of forces?

Engineering Mechanics
If a number of forces are acting at a point, their resultant will be inclined at an angle 'θ' with the horizontal, such that

Engineering Mechanics
The algebraic sum of moments of the forces forming couple about any point in their plane is

Engineering Mechanics
The centre of percussion of the homogeneous rod of length ‘L’ suspended at the top will be

Engineering Mechanics
For a self locking machine, the efficiency must be

Engineering Mechanics
In ideal machines, mechanical advantage is __________ velocity ratio.

Engineering Mechanics
Which is the correct statement about law of polygon of forces?