Strength of Materials
Kinetic friction is the

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

ANSWER DOWNLOAD EXAMIANS APP

Strength of Materials
In ideal machines

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

ANSWER DOWNLOAD EXAMIANS APP

Strength of Materials
Center of percussion is

the point of application of the resultant of all the forces tending to cause a body to rotate about a certain axis
point of suspension
the point of metacentre
the point of C.G.

ANSWER DOWNLOAD EXAMIANS APP