InterviewSolution
Saved Bookmarks
| 1. |
6.A horse cannot pull a cart and run in empty space. |
|
Answer» When a horse is trying to pull a cart, he pushes the ground backward at an angle from the horizontal. According to Newton’s third law of motion, the ground also apply equal reaction force on the feet of the horse in opposite direction. The vertical component of reaction balances the weight of the horse and horizontal component is responsible for motion of the cart. In empty space, there is no reaction force, therefore a horse cannot pull a cart. |
|