$38\mathrm{.}4963$

$38\mathrm{.}4963$

incorrect

The answer above is NOT correct.

At $t=0s$ a flywheel is rotating at $20$ rpm $.$ A motor gives it a constant acceleration of $1ra\frac{d}{s^2}$ until it reaches $100$ rpm $.$ The motor is then disconnected. How many revolutions are completed at $t=20s?$

revolutions

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You have attempted this problem $2$ times.

You received a score of $0\%$ for this attempt.

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Problems

$11v$

$12v$

$13v$

$4v$

$15v$

$46v$

$4$

$\backslash$table$[[16\mathrm{.}1105,,,],[2\mathrm{.}25,*,16\mathrm{.}1105,$correct$],[,,16\mathrm{.}1105,$correct$]]$

n $7$

All of the answers above are correct.

A block of mass $3\mathrm{.}1$ kg hangs vertically from a frictionless pulley of mass $7$ kg and radius $25$ cm $.$ Treat the pulley as a disk. Find:

a$)$ the acceleration of the block;

$q,\frac{m}{s^2}$

b$)$ the tension in the rope;

$q,$

N

c$)$ the speed of the block after it has fallen $55$ cm $,$ assuming it started at rest:

$q,\frac{m}{s}$

Note: You can earn partial credit on this problem.

$$

Your score was recorded.

You have attempted this problem $4$ times.

You received a score of $100\%$ for this attempt.

Your overall recorded score is $100\%.$

You have unlimited attempts remaining.

$$

Problems

$11v$

$12v$

$13v$

$4v$

$15v$

$46v$

$4$

$\backslash$table$[[16\mathrm{.}1105,,,],[2\mathrm{.}25,*,16\mathrm{.}1105,$correct$],[,,16\mathrm{.}1105,$correct$]]$

n $7$

All of the answers above are correct.

A block of mass $3\mathrm{.}1$ kg hangs vertically from a frictionless pulley of mass $7$ kg and radius $25$ cm $.$ Treat the pulley as a disk. Find:

a$)$ the acceleration of the block;

$q,\frac{m}{s^2}$

b$)$ the tension in the rope;

$q,$

N

c$)$ the speed of the block after it has fallen $55$ cm $,$ assuming it started at rest:

$q,\frac{m}{s}$

Note: You can earn partial credit on this problem.

$$

Your score was recorded.

You have attempted this problem $4$ times.

You received a score of $100\%$ for this attempt.

Your overall recorded score is $100\%.$

You have unlimited attempts remaining.

$$