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Question
A metallic ball is hanging by a string from a fixed support. Draw a neat labelled diagram showing the forces acting on the ball and the string.
Solution
When a metallic ball is hanging by a string from a fixed support, the forces acting on the string are: (represented by blue coloured arrows in the diagram)
1) Tension T applied by wall acting vertically upward.
2) Tension T applied by ball acting vertically downward.
The forces acting on the ball are: (represented by red coloured arrows in the diagram)
1) Tension T applied by string acting vertically upward.
2) Gravitational pull (mg) acting vertically downward.
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