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Define pressure - ANSWER-The force per unit area
Define moment of a force - ANSWER-Force multiplied by the perpendicular distance
from the pivot to the line of action of the force
Define density - ANSWER-The mass per unit volume
Define 1 newton - ANSWER-The force requires to love an object of 1 kg with an
acceleration of 1 m/s2
For any object to be in equilibrium.. - ANSWER-The sum of the clockwise moment has
to be equal to the sum of the anti clockwise moment about the pivot
NetTorque and NetForce is always 0 in.. - ANSWER-Equilibrium
Define torque - ANSWER-One of the forces X by the perpendicular distance between
the forces
Define couple - ANSWER-Pairs of equal and opposite forces that produce rotation, eg
steering wheel
Reaction time is .. - ANSWER-The time taken for driver to react to a stimulant
1000L is how many m3? - ANSWER-1m3
Accurate is.. - ANSWER-How far is your value from the real value
Precise is.. - ANSWER-How many times you repeat your experiment and get the same
value
SUVAT equations only work when.. - ANSWER-Acceleration is constant
Tensile stress - ANSWER-The force applied per unit area of the wire
Tensile strain - ANSWER-The fractional change in the original length of the wire
Ultimate tensile strength - ANSWER-The maximum stress that a material can withstand
when being stretched
Brittle - ANSWER-When materials cannot be permanently stretched, they break after
the elastic limit has been exceeded