When a bus is pushed while sitting inside it, it does not move.
This is because an internal force provides support and prevents it from breaking. This force has a magnitude that causes the scale to bend but does not break it. The muscular force acting on the scale is the external force. A significant amount of tension and compression gets built into the scale. When a muscular force is applied on the edges of a scale, it bends. On the contrary, the force that helps the tree to stay in the position and prevents it from falling down is known as an internal force. Since the force exerted by the wind on the tree is from the outside, it is known as an external force. The distance covered by the object is proportional to the intensity with which force is applied to the ball.Ī tree is set to swing when a force is applied by the wind on it. This external force acting on the ball causes it to move. Therefore, the force acting on the ball is said to be an external force. The pair of action-reaction forces are not present entirely in the system of consideration.
When a footballer kicks a ball, he exerts a significant amount of force on the ball.
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