Question

A solid cylinder of mass 20 kg and radius 0.12 m rotating with

initial angular speed of

1

125s

−

is placed lightly (i.e., without any

translational push) on a horizontal table with coefficient of kinetic

friction

0.15,  =k

. between cylinder and table.

(a) After how long does the cylinder start rolling ?

(b) What is the initial :

(i) translational energy

(ii) rotational energy

(iii) total energy of the cylinder ?

(c) What is the final (i.e., after the rolling begins) :

(i) translational energy

(ii) rotational energy

(iii) total energy of the cylinder ?

(d) Is the final total energy equal to the initial total

energy of motion of the cylinder ? If not, where does the

difference of energy disappear ?
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Answer 1

Answer:

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Answer 2

Answer:

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Explanation:

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