In ideal machines

Strength of Materials
In ideal machines

mechanical advantage is unity

mechanical advantage is greater than velocity ratio

mechanical advantage is less than velocity ratio

mechanical advantage is equal to velocity ratio

mechanical advantage is unity

mechanical advantage is greater than velocity ratio

mechanical advantage is less than velocity ratio

mechanical advantage is equal to velocity ratio

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Strength of Materials
A semi-circular disc rests on a horizontal surface with its top flat surface horizontal and circular portion touching down. The coefficient of friction between semi-cricular disc and horizontal surface is i. This disc is to be pulled by a horizontal force applied at one edge and it always remains horizontal. When the disc is about to start moving, its top horizontal force will

slant up towards direction of pull

unpredictable

slant down towards direction of pull

remain horizontal

slant up towards direction of pull

unpredictable

slant down towards direction of pull

remain horizontal

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Strength of Materials
The resultant of the following three couples 20 kg force, 0.5 m arm, + ve sense 30 kg force, 1 m arm, â€“ ve sense 40 kg force, 0.25 m arm, + ve sense having arm of 0.5 m will be

20 kg, + ve sense

20 kg, - ve sense

10 kg, - ve sense

10 kg, + ve sense

20 kg, + ve sense

20 kg, - ve sense

10 kg, - ve sense

10 kg, + ve sense

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Strength of Materials
In the lever of third order, load W, effort P and fulcrum F are oriented as follows

W, P and F all on one side

F between W and P

W between P and F

P between W and F

W, P and F all on one side

F between W and P

W between P and F

P between W and F

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Strength of Materials
According to Lami's theorem

Three forces acting at a point can be represented by a triangle, each side being proportional to force

If three forces acting at a point are in equilibrium, each force is proportional to the sine of the angle between the other two

If three forces acting upon a particle are represented in magnitude and direction by the sides of a triangle, taken in order, they will be in equilibrium

Three forces acting at a point will be in equilibrium

Three forces acting at a point can be represented by a triangle, each side being proportional to force

If three forces acting at a point are in equilibrium, each force is proportional to the sine of the angle between the other two

If three forces acting upon a particle are represented in magnitude and direction by the sides of a triangle, taken in order, they will be in equilibrium

Three forces acting at a point will be in equilibrium

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Strength of Materials
A flywheel on a motor goes from rest to 1000 rpm in 6 sec. The number of revolutions made is nearly equal to

25

100

250

50

25

100

250

50

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Strength of Materials

Strength of Materials In ideal machines

Strength of Materials The resultant of the following three couples 20 kg force, 0.5 m arm, + ve sense 30 kg force, 1 m arm, â€“ ve sense 40 kg force, 0.25 m arm, + ve sense having arm of 0.5 m will be

Strength of Materials In the lever of third order, load W, effort P and fulcrum F are oriented as follows

Strength of Materials According to Lami's theorem

Strength of Materials A flywheel on a motor goes from rest to 1000 rpm in 6 sec. The number of revolutions made is nearly equal to

Strength of Materials
In ideal machines

Strength of Materials
The resultant of the following three couples 20 kg force, 0.5 m arm, + ve sense 30 kg force, 1 m arm, â€“ ve sense 40 kg force, 0.25 m arm, + ve sense having arm of 0.5 m will be

Strength of Materials
In the lever of third order, load W, effort P and fulcrum F are oriented as follows

Strength of Materials
According to Lami's theorem

Strength of Materials
A flywheel on a motor goes from rest to 1000 rpm in 6 sec. The number of revolutions made is nearly equal to