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WorksheetsWS6- Revision Worksheet
Total questions: 20
Worksheet time: 20mins
Calculate the density of an object. To do this, we measure its mass onsome scales, obtaining a value of 50,2g. We also measure its volume in a graduated cylinder. The water initially has a volume of 22cm3. When we put the object in the water, the volume rises to 34cm3.
4,18 g/cm3
0,24 g/cm3
1,47 g/cm3
2,28 g/cm3
When a fluid fills a closed container, it exerts pressure
only on the bottom of the container
only on the sides of the container
only on particles within the fluid
everywhere inside the container
Fluids exert pressure because they
contain force particles
are confined to small area
have constantly moving particles
all of these are correct
A submarine is found 20 meters below the surface of the sea. The density of sea water is 1020 kg m-3 and g = 10 m/s2 What is the pressure due to the sea water acting on the submarine?
20.4 Pa
2.04 x 103 Pa
2.04 x 102 Pa
2.04 x 105 Pa
2.04 x 10-2 Pa
What is a hydraulic system?
A system that uses a liquid under pressure to transmit a force to do work.
A system that uses a gas under pressure to transmit a force to do work
Pascal's law.
It uses water to push an object.
Which lever configuration is most similar to the hydraulic system pictured?
Two masses of mass 10.0 and 6.0 kg are hung from massless strings at the end of a light rod. The rod is virtually weightless. A pivot (fulcrum) is placed off center and the system is free to rotate. If the 6.0 kg mass is 4.0 m away from the pivot, how far away is the 10.0 kg mass if the system is not rotating?
0.42 m
2.4 m
4.8 m
4.2 m
A boy of weight 600N sits on the see-saw as shown at a distance of 1.5m from the pivot. What is the force F required at the other end to balance the see-saw?
450 N
350 N
4.5 N
200 N
James weighs 200 N and sits 1 m from the pivot. Jane weighs 100 N. How far from the pivot must Jane be to balance the beam?
0.5 m
1 m
2 m
4 m
A force exerts a moment of 2 Nm. What is the distance of the force from the pivot?
1 m
0.5 m
0.2 m
0.25 m
To calculate a turning effect of a spanner the force is multiplied by the length of the spanner
always - if the length of the spanner is equal to the distance from the fulcrum to the applied force
never - the length must be equal to the distance from the pivot to the fulcrum
if the length of the spanner is equal to the parallel distance from the pivot to the applied force
if the length of the spanner is equal to the perpendicular distance from the pivot to the applied force
