Forces and Their Effects | Edexcel GCSE Physics, Foundation tier (1PH0)

Forces and Their Effects

50 questions
4 subtopics
Paper 2
Paper 2

Forces and Their Effects is examined in Paper 2, Physics 2.

It covers contact and non-contact forces, vectors and scalars, and reducing friction, turning forces and the moment of a force and the principle of moments, levers and gears.

Sample questions from Forces and Their Effects

Answer each one closed book first, then open the answer.

Contact and non-contact forces

Give an example of two objects interacting through an electrostatic field.

Show the answer
A charged plastic rod attracts small polystyrene balls without touching them.
Contact and non-contact forces

Give two examples of contact forces.

Show the answer
The normal contact force from a surface and friction between two surfaces.
Vectors and scalars, and reducing friction

Explain why speed is a scalar quantity but velocity is a vector quantity.

Show the answer
Speed states only how fast something moves, whereas velocity also states the direction of motion.
Vectors and scalars, and reducing friction

Describe what happens to the friction force at a door hinge after oil is applied to it.

Show the answer
The friction force becomes smaller.
Turning forces and the moment of a force

Give an example of a force causing rotation in a kitchen.

Show the answer
Turning a tap handle rotates the tap about its axis.
Turning forces and the moment of a force

A moment of 24 N m is produced by a force of 60 N. Calculate the perpendicular distance of the force from the pivot.

Show the answer
Distance = 24 ÷ 60 = 0.4 m.
The principle of moments, levers and gears

Explain what happens to a balanced beam if one of the two forces on it is moved closer to the pivot.

Show the answer
That moment becomes smaller, so the beam rotates in the direction of the larger moment.
The principle of moments, levers and gears

Explain how a pair of meshed gears transmits the turning effect of a force.

Show the answer
The teeth of the driving gear push on the teeth of the second gear, making it rotate as well.

The 4 subtopics

One subtopic is one session. Work down the list.

Subtopic	What it covers	Questions
Contact and non-contact forces	Non-contact forces acting through gravitational, electrostatic and magnetic fields with an example of each, contact forces such as the normal contact force and friction, interaction pairs, and why a force is drawn as an arrow.	11
Vectors and scalars, and reducing friction	Vector and scalar quantities with examples, speed and velocity, mass and weight, distance and displacement, and how lubricants reduce friction in door hinges, engines, bicycle chains and machines.	11
Turning forces and the moment of a force	The turning effect of a force about a pivot on doors, taps and spanners, the moment of a force as force × distance normal to the direction of the force, its unit N m, and calculating moments, forces and distances.	14
The principle of moments, levers and gears	The principle of moments with seesaw and beam calculations, how levers make tasks easier and their effort, load and pivot, and how meshed gears transmit a turning effect, including a small gear driving a larger one and low gears on hills.	14

Forces and Their Effects is 50 of the 1,778 questions in the guide.Get the guide, £7

How the guide is worked

Answering a question from memory stores it far better than reading the answer again. The guide runs that as a fixed procedure on one subtopic at a time, about twenty minutes a session.

Step 1 · Closed book
Cover the answers. Work through one subtopic and write down what you can. Leave blanks where you have nothing.
Step 2 · Open book
Go back to the top. Read each printed answer and write it out in full, including the ones you had right.
Step 3 · Closed book again
Same questions, same order, from memory. The gap between pass one and pass three is the session result.

Read the full method, the return schedule and the research behind it.