1a6 marks
Two children play on a seesaw.
Both children sit 2m from the pivot.
a)
i)
Calculate the clockwise and anti-clockwise moments around the pivot when the seesaw is horizontal.
Clockwise moment = ........................................................ Nm
Anti-clockwise moment = ........................................................ Nm
[3]
ii)
Calculate where Child A should sit to balance the seesaw.
Answer = .......................................................... [3]
1b4 marks
b)
A student tries to compress the fluid in a sealed syringe with a force of 10 N.
The area of the end of the syringe is 0.1 m2.
i)
Calculate the pressure in the fluid.
Answer = .................................................... Pa [3]
ii)
Write down the direction of the force produced by the fluid on the plunger.
[1]
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The seatbelts for children are narrower than adult seatbelts.