Mechanical Science

The SI unit of weight is the…

• Kilogram

• Pascal

• Newton

• Coulomb

In the S.I. unit system the Newton is the unit of…

• Power

• Energy

• Force

• Work

Force, mass and acceleration are related by the formula…

• Force = Mass/Acceleration

• Acceleration = Force x Mass

• Mass = Force x Acceleration

• Force = Mass x Acceleration

The force of gravity is?

• 9.81 N

• 8.91 N

• 9.91 N

• 8.90 N

Another name for the pivot of a lever is ?

• Load

• Handle

• Fulcrum

• Crimp

The 3 components of a lever are?

• Crimp, load, effort

• Fulcrum, load, effort

• Force, load, effort

• Load, Fulcrum, energy

One joule of energy is equivalent to…

• 1 Newton-Metre

• 1 Ohm Metre

• 1 Kilohertz

• 1 Millivolt

What type of force causes two surfaces to stretch in opposite directions…

• Compressive force

• Friction force

• Shear force

• Tensile force

Neglecting the weight of the beam what force is required to balance the beam?

• 10 N

• 5 N

• 20 N

• 40 N

A force of 30 N acts though a distance of 4m, the work done is ?

• 120 joules

• 73.57 joules

• 12.23 joules

• 7.5 joules