Strength of Materials
From a circular plate of diameter 6 cm is cut out a circle whose diameter is a radius of the plate. Find the e.g. of the remainder from the center of circular plate

1.5 cm
1.0 cm
2.5 cm
0.5 cm

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Strength of Materials
The weight of a body is due to

centripetal force of earth
gravitational force of attraction towards the centre of the earth.
gravitational pull exerted by the earth
force of attraction experienced by par-ticles

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Strength of Materials
In the equation of virtual work, following force is neglected

reaction at a point or an axis, fixed in space, around which a body is con-strained to turn
All of the listed here
reaction of any smooth surface with which the body is in contact
reaction of a rough surface of a body which rolls on it without slipping

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Strength of Materials
In ideal machines

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

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