A ladder of weight 'w' rests against a smooth vertical wall, and rests on rough horizontal ground, the coefficient of friction between the ladder and the ground being 1/4. The maximum angle of inclination of the ladder to the vertical, if a man of weight 'w' is to walk to the top of it safely, is tan'1 x, where x is

Applied Mechanics and Graphic Statics
A ladder of weight 'w' rests against a smooth vertical wall, and rests on rough horizontal ground, the coefficient of friction between the ladder and the ground being 1/4. The maximum angle of inclination of the ladder to the vertical, if a man of weight 'w' is to walk to the top of it safely, is tan'1 x, where x is

43833

3

4

43834

43833

3

4

43834

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Applied Mechanics and Graphic Statics
If two forces are in equilibrium, then the forces must (i) Be equal in magnitude (ii) Be opposite in sense (iii) Act along the same line

Only (i)

(i) and (iii)

All (i), (ii) and (iii)

(i) and (ii)

Only (i)

(i) and (iii)

All (i), (ii) and (iii)

(i) and (ii)

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Applied Mechanics and Graphic Statics
The following is not a law of static friction:

The force of friction depends upon the roughness of the surface

The force of friction always acts in a direction opposite to that in which the body tends to move

The magnitude of the limiting friction bears a constant ratio to the normal reaction between two surfaces

The force of friction is dependent upon the area of contact

The force of friction depends upon the roughness of the surface

The force of friction always acts in a direction opposite to that in which the body tends to move

The magnitude of the limiting friction bears a constant ratio to the normal reaction between two surfaces

The force of friction is dependent upon the area of contact

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Applied Mechanics and Graphic Statics
The shape of a suspended cable under its own weight, is

Catenary

Circular

Parabolic

Elliptical

Catenary

Circular

Parabolic

Elliptical

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Applied Mechanics and Graphic Statics
The C.G. of a thin hollow cone of height ‘h’, above its base lies on the axis, at a height of

h/4

2h/3

h/3

3h/4

h/4

2h/3

h/3

3h/4

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Applied Mechanics and Graphic Statics
If ‘v’ and ‘ω’ are linear and angular velocities, the centripetal acceleration of a moving body along the circular path of radius ‘r’, will be

r/v²

v²/r

ω²/r

r/ω²

r/v²

v²/r

ω²/r

r/ω²

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Applied Mechanics and Graphic Statics

Applied Mechanics and Graphic Statics If two forces are in equilibrium, then the forces must (i) Be equal in magnitude (ii) Be opposite in sense (iii) Act along the same line

Applied Mechanics and Graphic Statics The following is not a law of static friction:

Applied Mechanics and Graphic Statics The shape of a suspended cable under its own weight, is

Applied Mechanics and Graphic Statics The C.G. of a thin hollow cone of height ‘h’, above its base lies on the axis, at a height of

Applied Mechanics and Graphic Statics If ‘v’ and ‘ω’ are linear and angular velocities, the centripetal acceleration of a moving body along the circular path of radius ‘r’, will be

Applied Mechanics and Graphic Statics
If two forces are in equilibrium, then the forces must (i) Be equal in magnitude (ii) Be opposite in sense (iii) Act along the same line

Applied Mechanics and Graphic Statics
The following is not a law of static friction:

Applied Mechanics and Graphic Statics
The shape of a suspended cable under its own weight, is

Applied Mechanics and Graphic Statics
The C.G. of a thin hollow cone of height ‘h’, above its base lies on the axis, at a height of

Applied Mechanics and Graphic Statics
If ‘v’ and ‘ω’ are linear and angular velocities, the centripetal acceleration of a moving body along the circular path of radius ‘r’, will be