ss) of 100 MPa. What slip systems may work
when a normal stress is applied along  direction? How much is the minimum normal stress needed to plastically deform the rod? (using
some uncharged pieces of paper.
a. Draw the charges formed on the polythene strip and the duster.
b. What do you observe when the rod is brought near some uncharged pieces of paper? Explain.
it observe the paper
c. How would the observation in (b) change if the rod is made of metal instead of polythene. Explain.