A heavy cargo container is pulled horizontally along a concrete dock by a winch.
The horizontal forces acting on the container are shown below:
- Tension force from the winch cable = 4500 N4500\text{ N}4500 N (forward)
- Friction between the container and the concrete surface = 2900 N2900\text{ N}2900 N (backward)
- Air resistance = 400 N400\text{ N}400 N (backward)
Determine the magnitude of the resultant horizontal force acting on the cargo container.
Describe the horizontal motion of the container.
Friction and air resistance are contact forces. Give one other example of a contact force.
Forces and their interactions Questions
Practise AQA GCSE Physics Forces and their interactions with exam-style questions for Foundation and Higher tier. 13 questions covering Scalar and vector quantities, Contact and non-contact forces, Gravity, and Resultant forces, matched to the AQA GCSE Physics (8463) specification and written in Paper 1 and Paper 2 style. Every question includes a full worked solution and mark scheme, so you can see where marks are awarded rather than just whether you got the answer right.