Question

how to answer these physics questions
to 2 decimal places where possible  

QUESTION 5 Happy Gilmore can hit a golf ball so that it leaves the club head with a linear (tangential velocity of 27.8 m/s, calculate the radius length of his club if the angular velocity your answer as a number rounded to 2 decimal places QUESTION 6 In a track and field competition a hammer of 4 kg is accelerated from rest at 14.9 rad/s/s over 2.55 seconds. If the radius of rotation is 1.3 m, calculate the final angular velocity of the hammer at the instant prior to release. Note 1: The units are not required to be expressed in the answer in this instance. Note 2: If rounding is required, please express your answer as a number rounded to 2 decimal places. QUESTION 7 A second athlete in a track and field competition accelerates a hammer of 4 kg from rest at 23.9 rad/s/s over 24 seconds. If the radius of rotation is 1.55 m, calculate the tangential component of acceleration if the linear velocity of the hammer at release is 25 m/s. Note 1: The units are not required to be expressed in the answer in this Instance. Note 2: If rounding is required, please express your answer as a number rounded to 2 decimal places.

5 6 and 7

Answer 1

OS :- Tantential velocity: V = 27.8 m/s Radius of club, R= ? Angules velocity; w= 25-08 walls we know that I = Rue so, Restaurant - 27.80 = 1.61m Radius of club; R=1-11 m/ of-me 4 kg: d = 14-9 rod/s2 t=2-55 sec Radius of Rotation, R= 1.3 m Since Hammer is accelerated from Rest so, anitial angular velocity, vi co rodes final angular Wf=? Kinematic equation in rotation Wf = Witat W4 -0+ 14.9 x 2.55 = 37.99 rad/s) velocity. Ozim = 4 kg, 8= 23. g radis2 W;= orados R= 1.55m, t=2-4 sec Uf - 25 mls, Tandenlial acceleration, at = ? we know that Tangential acceleration, at=re 50, A7 = |- 55 x 23-9= 37.04 misa 9+= 37.0 4 m/s2