Engineering mechanics

Which one of the following is an example of third order lever

• Wheel barrow

• Energy

• Scissors

• Fore arm

Energy possessed by a body due to change in its position is

• Potential energy

• Kinetic energy

• Mechanical energy

• Absolute energy

Energy possessed by a liquid by virtue of its position is

• Pressure energy

• Kinetic energy

• Potential energy

• None

A body travels a distance 20m in 10s, what is speed

• 1 m/s

• 2 m/s

• 3 m/s

• 200 m/s

Rate of change of velocity is

• Momentum

• Speed

• Acceleration

• Inertia

When mass of a bob in simple pendulum doubled it's period

• Remain unchanged

• Doubles

• Become 4 times

• Halved

Time period of a seconds pendulum is

• 1/2 s

• 1s

• 2s

• 5s

Maximum frictional force comes to play when a body just begins to slide over other is

• Static friction

• Dynamic friction

• Limiting friction

• Coefficient friction

Which of the following is scalar quantity

• Energy

• Momentum

• Torque

• Impulse

Which of the following is a vector quantity

• Speed

• Mass

• Force

• Specific gravity