# (a) Write an activity to demonstrate balanced and unbalanced forces.(b) State whether the forces are balanced or unbalanced in each case:(i) Suitcase dropped from a height.(ii) A bicycle moving with constant velocity on a straight road.(iii) The rope does not move in a tug of war on applying force at both ends.

(a)

a) Choose a heavy object like a table or a box, which you can move only by pushing hard.

b) Try to push it all by yourself. Can you move it?

d) Is it easier to move it now? Can you explain why? Next, push the same object, but ask your friend to push it from the opposite side.

e) Does the object move? If it does, note the direction in which it moves. Can you guess which one of you is applying a larger force?

(b)
i. The forces acting on the suitcase are unbalanced.

The air friction, weight & the airspeed are acting on the ball. Example, the figure is given below:

ii. Balanced forces.

iii. There are balanced forces.

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