Worksheets3NA Pressure
Total questions: 13
Worksheet time: 7mins
A pin is squeezed between a finger and thumb.
Which statement is correct?
The force of the pin is larger on the finger than on the thumb.
The force of the pin is larger on the thumb than on the finger.
The pressure of the pin is larger on the finger than on the thumb.
The pressure of the pin is larger on the thumb than on the pin.
A sharp knife has a surface area of 0.000005 m2 at the cutting edge. Given the force exerted by a man to cut the meat is 10 N, determine the pressure exerted by the knives.
(a)
A farmer has two carts. The carts have the same weight, but one has four narrow wheels and the other has four wide wheels.
Which cart wheel sinks less into soft ground?
The (a) wheel sinks less into soft ground.
For the previous question, the wide cart wheel sinks less into the ground.
What is the reason?
The wider the wheel, the (a) the pressure it exerts on the ground.
A woman has a weight of 600 N. She stands on the horizontal floor. The area of her feet in contact with the floor is 0.050 m2.
What is the pressure she exerts on the floor?
1200 Pa
2400 Pa
12000 Pa
24000 Pa
A nail is being hammered into a piece of wood.
Which statement best explains why the nail has a sharp tip?
A sharp tip will create a greater moment when the nail is hammered.
No force is needed to hammer a nail with a sharp tip.
There is higher pressure exerted by the nail when the tip is sharp.
There will be minimal friction when hammering the nail.
