Mechanical Systems Questions
and Complete Solutions 100%
All mechanical systems have mechanisms which ....? answer - transform an input motion and
force into an output one
What is a mechanical system ? answer - An assembly of mechanical components that form a
MACHINE
What is a mechanical component ? answer - A mechanical part of a larger system or product
What do mechanisms CHANGE? answer - magnitude and directions of force
What is mechanical advantage? answer - Making things physically EASIER TO DO.
Allows you to move large load with small effort.
They do this by changing the MAGNITUDE (size) and DIRECTION of the applied force.
Mechanical systems sometimes change .... answer - one type of MOTION into another.
Eg. Car Jack lets you lift a car - you turn a handle (rotary motion) with a small force and the car is
lifted upwards (linear force) by a large force
Name the types of motion ? answer - Linear
Rotary
Reciprocating
Oscillating
, Linear motion answer - Moving one way in a straight line E.g. Train on a track
Rotary motion answer - Moving in a circle
E.g. Bike wheel
Reciprocating motion answer - Backwards and forwards motion in a straight line. E.g. sawing
Oscillating motion answer - Backwards and forwards motion in an arc. E.g. swing.
What is a lever? answer - A level changes input movement + force (effort) into an output
movement + force (load)
A level helps to move/lift things by moving around a fixed point called a PIVOT.
Levers make it easier to move and lift things
Oldest type of mechanism (used to build pyramids).
What are the types of lever ? answer - Class 1 - pivot in the middle
Class 2 - load in middle
Class 3 - effort in middle
PIE
Explain how Class 1 lever works. Example answer - Pivot point (or fulcrum) is placed between
the effort and load.
Pushing down (effort) on the lever lifts the load. The lever has ROTATING motion.
and Complete Solutions 100%
All mechanical systems have mechanisms which ....? answer - transform an input motion and
force into an output one
What is a mechanical system ? answer - An assembly of mechanical components that form a
MACHINE
What is a mechanical component ? answer - A mechanical part of a larger system or product
What do mechanisms CHANGE? answer - magnitude and directions of force
What is mechanical advantage? answer - Making things physically EASIER TO DO.
Allows you to move large load with small effort.
They do this by changing the MAGNITUDE (size) and DIRECTION of the applied force.
Mechanical systems sometimes change .... answer - one type of MOTION into another.
Eg. Car Jack lets you lift a car - you turn a handle (rotary motion) with a small force and the car is
lifted upwards (linear force) by a large force
Name the types of motion ? answer - Linear
Rotary
Reciprocating
Oscillating
, Linear motion answer - Moving one way in a straight line E.g. Train on a track
Rotary motion answer - Moving in a circle
E.g. Bike wheel
Reciprocating motion answer - Backwards and forwards motion in a straight line. E.g. sawing
Oscillating motion answer - Backwards and forwards motion in an arc. E.g. swing.
What is a lever? answer - A level changes input movement + force (effort) into an output
movement + force (load)
A level helps to move/lift things by moving around a fixed point called a PIVOT.
Levers make it easier to move and lift things
Oldest type of mechanism (used to build pyramids).
What are the types of lever ? answer - Class 1 - pivot in the middle
Class 2 - load in middle
Class 3 - effort in middle
PIE
Explain how Class 1 lever works. Example answer - Pivot point (or fulcrum) is placed between
the effort and load.
Pushing down (effort) on the lever lifts the load. The lever has ROTATING motion.
