Engineered Products

Question 1

What are some technological developments in the modern lawn mower?

Answer 1

• Polymers: Old lawnmowers had no polymers as they were only invented in the 1970s. The new mower uses polymer for the fuel tank, grass catcher and wheels.
• Recoil/electric start: Old mowers required a rope to be wound around a pulley to start the engine. Modern mowers have an ignition plug which creates a recoil/ electric start which eliminates the inconvenience of having to wind a cord around a pulley to start the engine.

Question 2

What are some negative impacts of the motorised lawnmower on society?

Answer 2

• Less exercise resulting in more health problems
• High purchase cost which places pressure on a family’s finances
• Increased stress for neighbours as the noise pollution would cause disturbance
• More accidents resulting in anguish for the injured and higher costs for medical institutions

Question 3

What are some positive impacts of the motorised lawnmower on society?

Answer 3

• More leisure time due to the efficiency of the mower
• Provides satisfaction as enhanced cutting technology produces better results
• Income for small businesses cutting lawns/selling mowers

Question 4

What are some safety features present on the 1990’s lawnmower?

Answer 4

• Blades covered by polymer on either side, preventing injury to the user
• SOMETHING ELSE