ENGINEERING MECHANICS QUIZ

mr²/2

2mr²/5

mr²

2mr²/3

Greater than

Less than

Equal to

None of these

Rolling friction

Limiting friction

Static friction

Dynamic friction

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

Meet at one point and their lines of action also lie on the same plane

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

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

t = 2u sin (α + β)/g cos β

t = g cos β/2u sin (α - β)

t = g cos β/2u sin (α + β)

t = 2u sin (α - β)/g cos β

Minimum

Zero

None of these

Maximum

-8.9 m/s2

+8.9 m/s2

+9.8 m/s2

-9.8 m/s2

mr²/2

mr²/8

mr²/4

mr²/6

Potential energy

Kinetic energy

None of these

Power

Downward at its upper end

Perpendicular to the wall at its upper end

Upward at its upper end

Zero at its upper end