ENGINEERING MECHANICS QUIZ

m/s2

N-m

rad/s2

m/s

Do not meet at one point and their lines of action do not lie on the same plane

None of these

Do not meet at one point but their lines of action lie on the same plane

Meet at one point, but their lines of action do not lie on the same plane

πN/60

2πN/180

πN/180

2πN/60

Equal to

None of these

Greater than

Less than

2P cosθ/2

2P tanθ/2

2P cotθ/2

2P sinθ/2

The ratio of the limiting friction to the normal reaction is called coefficient of friction

The velocity ratio of a machine is the ratio of load lifted to the effort applied

A force acting in the opposite direction to the motion of the body is called force of friction

A machine whose efficiency is 100% is known as an ideal machine

30°

90°

45°

60°

None of these

Elastic bodies

Inelastic bodies

Neither elastic nor inelastic bodies

Their algebraic sum is zero

Their lines of action are at equal distances

The algebraic sum of their moments about any point in their plane is zero

The algebraic sum of their moments about any point is equal to the moment of their resultant force about the same point

ω.√(r² - y²)

ω.√(y² - r²)

ω².√(r² - y²)

ω².√(y² - r²)