Lifting a bale of cotton is no easy task. Farmer Jones wanted to store the cotton in the loft of his barn but he could not budge
2 answers:
An inclined plane would not be practical because he would still have to push it and the amount of effort and energy would increase. A lever would not be practical because he would have to use his weight to make the bale rise 15 feet. He would also need to make sure that he has a 15 foot ladder in the first place. A screw would not be practical because he would have to drill a hole through the medium and use rotation.
A pulley would be the most practical way of moving the cotton bale. A pulley supports movement and will help the farmer move the bale.
A pulley would be the most practical way of moving the cotton bale. A pulley supports movement and will help the farmer move the bale.
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Answer:
a) , with a magnitude of
b) , with a magnitude of
c) , with a magnitude of
Explanation:
We have:
We can calculate each component of the acceleration using its definition
The rate of change of momentum of the ball is
So for each coordinate:
And these are equal to the components of the net force since F=ma.
If magnitudes is what is asked:
<em>(N and </em><em> are the same unit).</em>