Strength of Materials
The magnitude of two forces, which when acting at right angle produce resultant force of VlOkg and when acting at 60° produce resultant of Vl3 kg. These forces are

2 and V6
2 and 5
V5 and V5
3 and 1 kg

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Strength of Materials
Coefficient of friction is the

angle between normal reaction and the resultant of normal reaction and the limiting friction
the friction force acting when the body is in motion
ratio of limiting friction and normal reaction
the friction force acting when the body is just about to move

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Strength of Materials
In actual machines

mechanical advantage is less than velocity ratio
mechanical advantage is greater than velocity ratio
mechanical advantage is equal to velocity ratio
mechanical advantage is unity

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