Question

Rashmi applies a force of 50 N on a box towards east.But the box doesn't move.
(i) State the reason behind the happening.
(ii) To help Rashmi, in which direction should her friend exert force on the box? If the box
moves, is the force acting on the box balanced or unbalanced?
(iii) How can rollers help in easy movement of the box?
(iv) What do you mean by lubricants? Explain alongwith examples.
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Answer 1

Answer:

1. The resistive force of the box is more than the force applied.

2. Towards east, imbalanced

3. If rollers are used,no force of friction is applied on the box and it will result in easy movement of the box.

4. search this on a web browser