If the force is strong enough to cause slipping which of the
       If the force is strong enough to cause slipping, which of the following will occur to the black test bar as a result of slippage on slip planes?  Check all that apply.  The bar will become longer temporarily, but will return to its original shape when the force is removed  The bar will start to curve due to slippage in one direction.  The bar will become narrower temporarily, but will return to its original shape when the force is removed  The bar will be distorted sideways as slip can occur in only one direction.  The bar will become longer permanently.  The bar will become narrower permanently.  The shown slip plane is the {111} plane.  The shown slip plane is the {100} plane.  The shown slip plane is the {110} plane. 
  
  Solution
Due to inadequate force applied., Slipping takes place. During this condition, the applied force is less than the friction force between the bar and the support.
Hence, the first statement holds good, i.e., upon application of the force the bar elongates temporarily but regains its original length upon removal of the force.
The second statement is correct. Curvature takes place due to elongation along vertical direction.
The thid statement is incorrect because the force is tensile in nature. The The fourth statement is incorrect as distortion doesn\'t take place since the applied force is less than the frictional force.

