Our site uses cookies. Some of the cookies we use are essential for parts of the site to operate and have already been set. You may delete and block all cookies from this site, but parts of the site will not work. To find out more about cookies on this website, see our Cookie Policy
Accept
© eRevision.uk and ZigZag Education 2025
This test is run by .
Note that your final mark will not be saved in the system.

Equilibrium, density and pressure GapFill

Target Level
C
Running Total
0
0%
Attempt
1 of 3

You must fill all the gaps before clicking ‘Check Answers!’

A moment is a force acting to rotate an object around a point. The moment of a force is given by the equation  1/2 × force × (perpendicular distance)²√(force² + (perpendicular distance)²)force ÷ (perpendicular distance)force × (perpendicular distance).
Two forces acting on the same object at different points create a  couplerotarygeartorque, which has a turning effect called  gearcoupletorquerotary, which is the equivalent of a rotational force.
The point at which the weight of an object acts through it is called its  centre of weightcentre of gravityeffective masscentral moment. For a uniform and regular solid in a uniform gravitational field, this sits at the object's geometric centre.
The density of a solid is given by the equation ρ =  V/m²m/V²V/mm/V. The pressure exerted by a fluid or solid is given by p =  FAF/AF/A²F²/A. The pressure in a fluid at a particular depth is given by p =  hρg1/ρghhρ/ggh/ρ.

This is your 1st attempt! You get 3 marks for each one you get right. Good luck!

Pass Mark
72%