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Airida [17]
3 years ago
7

A penny is placed on a rotating turntable. where on the turntable does the penny require the largest centripetal force to remain

in place?
Physics
1 answer:
Mama L [17]3 years ago
4 0

m = mass of the penny

r = distance of the penny from the center of the turntable or axis of rotation

w = angular speed of rotation of turntable

F = centripetal force experienced by the penny

centripetal force "F" experienced by the penny of "m" at distance "r" from axis of rotation is given as

F = m r w²

in the above equation , mass of penny "m"  and angular speed "w" of the turntable is same at all places. hence the centripetal force directly depends on the radius .

hence greater the distance from center , greater will be the centripetal force to remain in place.  

So at the edge of the turntable , the penny experiences largest centripetal force to remain in place.

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Svetllana [295]

Answer:

M = 1073 Mev/c2

u = 0.95 C        

Explanation:

given data:

m1 =135 Mev/c2

v1 = 0.53 c

m2 = 938 Mev/c2

v2 = 0.98 c

from conservation of momentum principle we have

\frac{mu}{\sqrt{1-\frac{u^2}{C^2}}} = \frac{m1v1}{\sqrt{1-\frac{V1^2}{C^2}}} +\frac{m1v1}{\sqrt{1-\frac{V2^2}{C^2}}}

\frac{mu}{\sqrt{1-\frac{u^2}{C^2}}} = \frac{135*0.53c}{0.848} +\frac{938*0.98c}{0.2}

\frac{mu}{\sqrt{1-\frac{u^2}{C^2}}} = 4680.6 C   ...............1

Total mass of INITIAL particle M   =m1+m2 = 1073 Mev/c2

using equation 1

\frac{1073 u}{\sqrt{1-\frac{u^2}{C^2}}}= 4680.6C

solving for u we get

u = 0.95 C          

8 0
4 years ago
Scientists have learned about the structure of Earth's interior by
WINSTONCH [101]
C) studying seismic waves

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A car moves 60 meters as it accelerates from 0 m/s to 50 m/s. determine the acceleration of the car
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Acceleration = speed/ time

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as Δv = v₂ - v₁  / t

a   =   50m /s - 0 m/s  /  60m

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=    0.834s⁻¹

 

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4 years ago
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Let e be the induced emf and i be the induced current

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e = dФ / dt

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i x t / ( A x R) = B

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4 years ago
Two bodies, one hot and the other cold kept in vacuum.what will happen to the tempreture of bodies after some time.
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Hot body will lose heat from it, and that heat will goes out from it through radiation, so it's temperature will decrease after some time.

In same manner, cold body will take the heat, and it's temperature will increase

Hope this helps!
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