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Fantom [35]
3 years ago
15

The law of conservation of energy states that

Physics
2 answers:
Contact [7]3 years ago
6 0

answer is c. energy may neither be created nor destroyed

mars1129 [50]3 years ago
5 0

the answer is C

energy can neither be created nor destroyed; it may only be transformed

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4 years ago
Read 2 more answers
A wheel of radius R, mass M, and moment of inertia I is mounted on a frictionless, horizontal axles. A light cord wrapped around
Alex_Xolod [135]

Answer:

\alpha =\frac{m*g*R}{I-m*R^2}

a = \frac{m*g*R^2}{I-m*R^2}

T=\frac{I*m*g}{I-m*R^2}

Explanation:

By analyzing the torque on the wheel we get:

T*R=I*\alpha    Solving for T:   T=I/R*\alpha

On the object:

T-m*g = -m*a    Replacing our previous value for T:

I/R*\alpha-m*g = -m*a

The relation between angular and linear acceleration is:

a=\alpha*R

So,

I/R*\alpha-m*g = -m*\alpha*R

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\alpha =\frac{R*m*g}{I+m*R^2}

The linear acceleration will be:

a =\frac{R^2*m*g}{I+m*R^2}

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T =\frac{I*m*g}{I+m*R^2}

These are the values of all the variables: α, a, T

8 0
4 years ago
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