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QUESTION

# QUESTION ONE A worker pulls on a rope to properly position a 105 kg net full of fish to be lowered with a winch into a refrigeration hold as shown below. The tension in AC is 300N and @ = 21 degrees

QUESTION ONE

A worker pulls on a rope to properly position a 105 kg net full of fish to be lowered with a winch

into a refrigeration hold as shown below. The tension in AC is 300N and @ = 21 degrees.

Find the force carried in the AB and the angle 0.

QUESTION TWO

(A) Use dimension analysis to derive an equation that shows how Pressure(P) is related to

Force(F), velocity (V) and acceleration (A). [3]

(B) The velocity V of a particle depends upon time âtâ according to the equation

V=Vab + bt+<

Use Dimension analysis to determine the dimensions of a, b and e. What physical quantity does

each letter represent?

[3]

() A person gardening accelerates a lawnmower of mass 18kg from rest to a speed of 1.2mv/s in

2 seconds. The retarding force F shown in the figure below is 61.3N