if i lift an object from the ground with the same force as its weight (ignoring air resistance) will it remain stationary or move with constant velocity :|
- Thread Starter
- 30-04-2016 11:09
- 30-04-2016 11:42
It will accelerate upwards as it as a resultant force upwards.
Im assuming that the object is initially stationary. If so, the weight is equal to the normal reaction force (as it should be). Therefore, there is no resultant force. Therefore, according to newton's first law, it can travel at a constant velocity or remain stationary.
when you pull it up, you are applying an external force upwards.
Since the downward force (weight) is not equal to the upward forces(upthrust+normal reaction force), a resultant force is exerted upwards.