The primary unbalanced force due to inertia of reciprocating parts in a reciprocating engine is given by (where m = Mass of reciprocating parts, ω = Angular speed of crank, r = Radius of crank, θ = Angle of inclination of crank with the line of stroke, and n = Ratio of the length of connecting rod to radius of crank)

Theory of Machine
The primary unbalanced force due to inertia of reciprocating parts in a reciprocating engine is given by (where m = Mass of reciprocating parts, ω = Angular speed of crank, r = Radius of crank, θ = Angle of inclination of crank with the line of stroke, and n = Ratio of the length of connecting rod to radius of crank)

m.ω².r (sin 2θ/n)

m.ω².r cosθ

m.ω².r (cos 2θ/n)

m.ω².r sinθ

m.ω².r (sin 2θ/n)

m.ω².r cosθ

m.ω².r (cos 2θ/n)

m.ω².r sinθ

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Theory of Machine
An automobile steering gear is an example of

Higher pair

Rolling pair

Sliding pair

Lower pair

Higher pair

Rolling pair

Sliding pair

Lower pair

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Theory of Machine
Kinematic pairs are those which have

Two elements that permit relative motion

Point or line contact between the two elements when in motion

Surface contact between the two elements when in motion

Elements of pairs not held together mechanically

Two elements that permit relative motion

Point or line contact between the two elements when in motion

Surface contact between the two elements when in motion

Elements of pairs not held together mechanically

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Theory of Machine
The maximum or minimum value of the swaying couple is

± 2a (1 - c) m.ω².r

± a (1 - c) m.ω².r

± c.m.ω².r

± (a/√2) (1 - c) m.ω².r

± 2a (1 - c) m.ω².r

± a (1 - c) m.ω².r

± c.m.ω².r

± (a/√2) (1 - c) m.ω².r

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Theory of Machine
If ω/ωn is very high for a body vibrating under steady state vibrations, the phase angle for all values of damping factors, will tend to approach

0°

360°

180°

90°

0°

360°

180°

90°

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Theory of Machine
A disc is a spinning with an angular velocity ω rad/s about the axis of spin. The couple applied to the disc causing precession will be (where I = Mass moment of inertia of the disc, and ωP = Angular velocity of precession of the axis of spin)

I ω ωP

Iω²

(1/2).Iω²

(1/2). I ω ωP

I ω ωP

Iω²

(1/2).Iω²

(1/2). I ω ωP

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Theory of Machine

Theory of Machine An automobile steering gear is an example of

Theory of Machine Kinematic pairs are those which have

Theory of Machine The maximum or minimum value of the swaying couple is

Theory of Machine If ω/ωn is very high for a body vibrating under steady state vibrations, the phase angle for all values of damping factors, will tend to approach

Theory of Machine A disc is a spinning with an angular velocity ω rad/s about the axis of spin. The couple applied to the disc causing precession will be (where I = Mass moment of inertia of the disc, and ωP = Angular velocity of precession of the axis of spin)

Theory of Machine
An automobile steering gear is an example of

Theory of Machine
Kinematic pairs are those which have

Theory of Machine
The maximum or minimum value of the swaying couple is

Theory of Machine
If ω/ωn is very high for a body vibrating under steady state vibrations, the phase angle for all values of damping factors, will tend to approach

Theory of Machine
A disc is a spinning with an angular velocity ω rad/s about the axis of spin. The couple applied to the disc causing precession will be (where I = Mass moment of inertia of the disc, and ωP = Angular velocity of precession of the axis of spin)