**Mister Jack Hydraulic was always in a fix,
Whatever was the problem,
He was always there double – quick.**

Write a mathematical equation to show your working out to the following maths problems – a fun look at the scientific concepts of force and pressure.

**1/ If it took 3.5 minutes to lift a weight of 15 kg, how long did it take Hydraulic Jack to lift 150 kg ?**

**2/ Work out the area of a sheet of metal lifted by Mister Jack Hydraulic that measured 75 cm x 125 cm.**

**3/ Work out the volume of a brick lifted by Mister Jack Hydraulic that measured 5 cm wide, 4 cm high and 8 cm long.**

**4/ If one brick lifted by Mister Jack Hydraulic weighed 3.5 kg, how much did 200 weigh ?**

**5/ If the formula for the pressure of a piston = force / area, what pressure was exerted by Mister Hydraulic Jack with a pressure of 100 000 kj force on the sheet on metal ?**

**6/ If the formula for work is force x distance, how much work did Mister Jack Hydraulic have to do by carrying the sheet of metal 2 metres ?**

** Force
pushed with all his ___ ___ ___ ___ ___**

**___ ___ ___ ___ ___ d his way through the door**

**work___ ___ ___ ___ ___**

**power ___ ___ ___ ___ ___**

**___ ___ ___ ___ ___ a smile**

**___ ___ ___ ___ ___ of the argument**

**___ ___ ___ ___ ___ d to pay**

**___ ___ ___ ___ ___ of the law**

**___ ___ ___ ___ ___ four gale**

** Pressure
cabin ___ ___ ___ ___ ___ ___ ___ ___**

**cooker ___ ___ ___ ___ ___ ___ ___ ___**

**___ ___ ___ ___ ___ ___ ___ ___ guage**

**blood ___ ___ ___ ___ ___ ___ ___ ___**

**___ ___ ___ ___ ___ ___ ___ ___ gradient**

**___ ___ ___ ___ ___ ___ ___ ___ point**

**___ ___ ___ ___ ___ ___ ___ ising**

**___ ___ ___ ___ ___ ___ ___ is___ d**

**underwater ___ ___ ___ ___ ___ ___ ___ ___**

**air ___ ___ ___ ___ ___ ___ ___ ___**

**Measure
___ ___ ___ ___ ___ ___ ___ ___ ment**

**___ ___ ___ ___ ___ ___ ___ ing**

**well ___ ___ ___ ___ ___ ___ ___ d**

**___ ___ ___ ___ ___ ___ ___ abl___**

**___ ___ ___ ___ ___ ___ ___ d**

**___ ___ ___ ___ ___ ___ ___ ing stick**

**take ___ ___ ___ ___ ___ ___ ___ ___**

**for good ___ ___ ___ ___ ___ ___ ___ ___**

**in a ___ ___ ___ ___ ___ ___ ___ ___**

**short ___ ___ ___ ___ ___ ___ ___ ___**

**___ ___ ___ ___ ___ ___ ___ ably**

**___ ___ ___ ___ ___ ___ ___ ing tape**

**© Jacqueline Richards 2007**

**Answers
1/ 150 / 15 x 3.5 = 35 mins
2/ 75 x 125 = 9 375 sq cm
3/ 5 x 4 x 8 = 160 cubic cm
4/ 3.5 x 200 = 700 kg
5/ pressure = 100 000 / 9 375 = 10.6 r
6/ work = 100 000 x 2 = 200 000**

**Force
pushed with all his force
forced his way through the door
workforce
power force
force a smile
force of the argument
forced to pay
force of the law
force four gale**

**Pressure
cabin pressure
cooker pressure
pressure guage
blood pressure
pressure gradient
pressure point
pressurising
pressurised
underwater pressure
air pressure**

**Measure
measurement
measuring
measured
measurable
measured
measuring stick
take measure
for good measure
in a measure
short measure
measurably
measuring tape**