Answer / suguna

ball pen functions on the principle of surface tension

Answer / vijaygadu

HYDRODYNAMIC LUBRICATION

Pen is fitted with a tiny ball bearing in its tip. As the pen moves along the paper, the ball rotates picking up ink from the ink cartridge and leaving it on the paper.

Answer / atul tripathi

it works on two principles
- frictional force between pen and paper.
- gravitaional force due to which ink flows in downward direction.

Answer / shivaji

it works on the principle of gravitational force.due to
gravitational force ink flows downword direction.

Answer / it works on principle of surfa

Its working principle is surface tention
























' principle is

Answer / thirupati

-gravitaional force due to which ink flows in downward
direction.

Answer / rajasekar

Ball is fixed in the tip of the pen. Ball is rotated by the
friction with paper.due to capillary action (the gap
between ball and ball holder is min) the ink flows between
ball and ball holder and it is printed on the paper.

Answer / navdeep

friction between pen and paper

hi friends any body please help me i am going to write rrb examination for tecnical trade mech. pls tell me perfect authour name and publicataions for rrb objective type mech engg or any other options to prepare

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