hi, i have 5 questions i need the complete solutions with their final results. i

Question

hi,



i have 5 questions i need the
complete solutions with their final results. is there anyone couldhelp
me, i would appreciate that.



1)
2600 rev/min is equivalent to which of the following?
1. 273 rad/s
2. 43.3 rad/s
3. 2600 rad/s
4. 60 rad/s


2)

A 0.30-m-radius automobile tire rotates how many rad after startingfrom rest and accelerating at a constant 2.0 rad/s2 over a 5.0-sinterval?


3)

A Ferris wheel starts at rest and builds up to a final angularspeed of 0.70 rad/s while rotating through an angular displacementof 4.9 rad. What is its average angular acceleration?


4)

A Ferris wheel, rotating initially at an angular speed of 0.50rad/s, accelerates over a 7.0-s interval at a rate of 0.040 rad/s2.What is its angular speed after this 7-s interval?


5)

A point on the rim of a 0.30-m-radius rotating wheel has atangential speed of 4.0 m/s. What is the tangential speed of apoint 0.20 m from the center of the same wheel?







thank you in advance

Explanation / Answer

5)
tangential speed = angular speed * distance from centre     so, angular speed = 4.0/0.3 rad/s     so, tangential speedat 0.20 m = 4.0/0.30 *0.20 m/s = 2.66 m/s

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