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True or false? A moment is a turning effect of a force.
Which of these are components of a lever?
Which of these is the correct equation for a moment?
Moment = force * distance from line of action
Moment = force * perpendicular distance from line of action
Moment = force/distance from line of action
Moment = force/perpendicular distance from line of action
True or false? The centre of mass is the point at which the object's weight can be thought to be concentrated.
True or false? If an object's centre of mass lies outside the point of suspension, the object is in equilibrium.
Where is the centre of mass in a symmetrical object with multiple lines of symmetry?
At a point on one of the lines of symmetry
At a point which is not on the lines of symmetry
At the point where the lines of symmetry meet
True or false? The sum of all clockwise moments is always greater than the sum of all anticlockwise moments about a single point in equilibrium.
How far from the fulcrum would I place a parcel with weight 20N on a seesaw if there were a parcel with weight 17.5N 4m from the fulcrum?
When will there be a resultant moment causing an object to topple over?
When the centre of mass is within the base
When the centre of mass is directly above the base
When the centre of mass is outside the base
Where would you recommend passengers to sit in a double-decker bus to increase its stability?
On the lower deck
On the upper deck
Which of these decrease the stability of an object?
Low centre of mass
High centre of mass
Which of these is the correct equation for pressure?
Pressure = force/area
Pressure = area/force
Pressure = force * area
True or false? The pressure in a liquid does not act equally over all directions.
What is the force on a load in a hydraulic system if the force on the effort is 20N, the area of the effort is 0.05m^2 and the area of the load is 1.5m^2?
True or false? Centripetal acceleration acts towards the centre of a circle.
True or false? Centripetal force is a force in its own right.
Which of these will increase the centripetal force acting upon an object?
Increase in mass
Decrease in mass
Increase in speed
Decrease in speed
Increase in radius
Decrease in radius
What type of motion does a simple pendulum follow?
True or false? The amplitude of a pendulum is the distance between the equilibrium position and the highest point on either side.
True or false? The time period of a pendulum is the time it takes to go from the highest point on one side to the other.