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vova2212 [387]
2 years ago
8

Describe using examples how objects can be at rest and in motion simultaneously

Physics
1 answer:
elena-14-01-66 [18.8K]2 years ago
5 0
An object can be at rest and still be in motion because the earth is always in motion.

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Explanation:

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A roller coaster travels around a vertical 8-m radius loop. Determine the speed at the top of the loop if the normal force exert
strojnjashka [21]

Answer:

v=10m/sec

Explanation:

From the question we are told that

Radius of vertical r= 8m

Force exerted by passengers is 1/4 of weight

Generally the net force acting on top of the roller coaster is give to be

F_N+Fg

where

F_N =forceof the normal

Fg= force due to gravity

Generally the net force is given to be FC(force towards center)

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v^2 =\frac{40*10}{4}

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Therefore the speed of the roller coaster is given ton be v=10m/sec

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3 years ago
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