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Lady bird [3.3K]
3 years ago
8

a 0.65 kg ball is moving in a circular path which has a radius of 1.35 meters with a linear speed of 4.5m/s. what is the centrip

eral force acting on this ball
Advanced Placement (AP)
1 answer:
gtnhenbr [62]3 years ago
5 0
The acceleration formula is
a_{c}=\frac{v^{2}}{r}

We are given
v=4.5\ m/s
r=1.35\ m
Plug in:
a_{c}=\frac{(4.5\ m/s)^{2}}{1.35\ m}=15\ m/s^{2}

The formula for force is
F=ma

We now have
a=15\ m/s^{2}
m=0.65\ kg
Plug in:
F=15\ m/s^{2}*0.65\ kg=9.75\ N

So the centripetal force is 9.75 Newtons.
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I can tell you it is almost certainly not "concentrates". Concentrates are usually made of high-energy, low-fiber cereal grains, like oats, corn, soybeans, etc.

Dry Roughage might be the answer just because according to http://modernfarmer.com/2014/12/turnips/, turnips are a diarrhetic for cows. So, they should be mixed with high-fiber feeds in order for the cow to more effectively use of the nutrients in turnips. However, the question asked specifically which feed INCLUDES root vegetables. So, I don't think that dry roughage can possibly be the answer. Dry roughage are high in fiber, low in energy, and usually around 10-15% moisture. Dry Roughages include things like hay, husks, and straw.  

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I think dry matter can't be the answer because I believe it is just a measurement of how much dry matter is contained in a particular feed such as, silages, concentrates, and roughages. For example, this feed mixture is 885 dry matter feed.
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