Machines
Physics ⇒ Mechanics
Machines starts at 6 and continues till grade 12.
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See sample questions for grade 8
A block and tackle system uses 4 pulleys. What is the ideal mechanical advantage?
A lever has an input arm of 2 m and an output arm of 4 m. What is its mechanical advantage?
A lever is used to lift a 50 N load with an input force of 10 N. What is the mechanical advantage?
A machine requires 100 J of input work to do 80 J of output work. What is its efficiency?
A man uses a crowbar to lift a heavy box. In this scenario, what type of simple machine is the crowbar acting as?
A ramp is 4 meters long and 1 meter high. What is its ideal mechanical advantage?
A ramp is an example of which simple machine?
Describe how a wedge makes work easier.
Explain the difference between a fixed pulley and a movable pulley.
Explain why machines are not 100% efficient.
If a machine has a mechanical advantage of 4, what does this mean?
Name two examples of third-class levers.
What is the formula for mechanical advantage (MA) of a machine?
What is the function of a pulley?
What is the main purpose of using a machine?
What is the mechanical advantage of a machine?
Which part of a lever is located between the effort and the load in a first-class lever?
Which simple machine is used in a flagpole to raise and lower the flag?
