Q19 of 21 Page 16

A man is standing still on a level floor. What forces act on him? Draw a free body

diagram (FBD) to show all forces acting on him.


If a man is standing still on the level floor the FBD of the man would have only two forces acting on the man , the forces are Weight of the man and the Normal reaction force of the man. The arrows pointing upwards are the normal force whereas the arrows pointing downwards are representing weight.


If a man is walking the FBD of him would be completely different from this.


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A stick is placed on steps as shown in the figure. Draw normal forces on the stick.

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Observe the figure below and find in which direction the force of friction acts. Also indicate the normal forces and their directions.

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How do you appreciate the role of friction in facilitating our various activities?

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A monkey hangs stationary at the end of the vertical vine. What forces act on the monkey?