It is easier to open the door by applying the force at the free end because when the perpendicular distance is large less force is required to turn the body.
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Why is it easier to open a door by applying the force at the free end of it?
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A small pebble tied at one end of a string is placed near the periphery of a circular disc, at the center of which the other end of the string is tied to a peg. The disc is rotating about an axis passing through its centre. (a) What will be your observation when you are standing outside the disc? Explain. (b) What will be your observation when you are standing at the centre of the disc. Explain.
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