Edexcel IGCSE Physics 1.15 Resultant force
Practise finding resultant forces along one line, using force arrows, balanced forces and vehicle or block situations.
- Syllabus
- First assessment 2019
- Course
- Physics 4PH1
Exam points
- calculate the resultant horizontal force from opposing arrows on a vehicle or block diagram
- draw or label a missing force arrow when constant speed means the resultant force is zero
1.15 Resultant force question 1
Diagram 1 shows a wooden plank balanced horizontally on two supports, A and B.
A block is suspended from the plank between the supports by a cable of negligible weight.
Diagram 1
Diagram 2 shows the block and the cable connecting the block to the plank.
The block also experiences a force due to the tension in the cable.
Explain why the block remains stationary when it is supported by this tension force.
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