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Statement 1:

A uniform cubical block (of side  ) undergoes translational motion on a smooth horizontal surface under action of horizontal force  as shown in Fig. Under the given condition, the horizontal surface exerts normal reaction non-uniformly on the lower surface of the block

Statement 2:

For the cubical block given in statement 1, the horizontal force  has a tendency to rotate the cube about its centre in clockwise sence. Hence, the lower right edge of the cube presses the horizontal surface harder in comparison to the force exerted by the lower left edge of the cube on horizontal surface

a)

Statement 1 is True, Statement 2 is True; Statement 2 is correct explanation for Statement 1

b)

Statement 1 is True, Statement 2 is True; Statement 2 is not correct explanation for Statement 1

c)

Statement 1 is True, Statement 2 is False

d)

Statement 1 is False, Statement 2 is True



Question ID - 100918 | SaraNextGen Top Answer

Statement 1:

A uniform cubical block (of side  ) undergoes translational motion on a smooth horizontal surface under action of horizontal force  as shown in Fig. Under the given condition, the horizontal surface exerts normal reaction non-uniformly on the lower surface of the block

Statement 2:

For the cubical block given in statement 1, the horizontal force  has a tendency to rotate the cube about its centre in clockwise sence. Hence, the lower right edge of the cube presses the horizontal surface harder in comparison to the force exerted by the lower left edge of the cube on horizontal surface

a)

Statement 1 is True, Statement 2 is True; Statement 2 is correct explanation for Statement 1

b)

Statement 1 is True, Statement 2 is True; Statement 2 is not correct explanation for Statement 1

c)

Statement 1 is True, Statement 2 is False

d)

Statement 1 is False, Statement 2 is True

1 Answer
127 votes
Answer Key / Explanation : (c) -

(c)

The normal force will act non-uniformly to balance the torque of the applied force. Hence, statement I is true. The applied horizontal force  has tendency to rotate the cube in an anticlockwise sense about the centre of the cube. Hence, Statement2 is false

127 votes


127