Thursday

March 5, 2015

March 5, 2015

Posted by **Marwan** on Wednesday, October 17, 2012 at 12:01pm.

(a) How long does it take the discus thrower's speed to get to 3.4 rad/s?

(b) How many revolutions does the thrower make to reach the speed of 3.4 rad/s?

revolutions

(c) What is the linear speed of the discus at 3.4 rad/s?

(d) What is the tangential acceleration of the discus thrower at this point?

(e) What is the magnitude of the centripetal acceleration of the discus thrown?

(f) What is the magnitude of the discus's total acceleration?

- physics -
**Elena**, Wednesday, October 17, 2012 at 2:34pmR=1.2 m, ε=1.8 rad/s²

(a) ω=ε•t => t= ω/ε,

(b) 2πN= ε•t ²/2

N= ε•t ²/4π

(c) v= ω•R

(d) a(τ)= ε•R

(e) a(n)=ω²•R

(f) a=sqrt{ a(τ)²+a(n)²}

**Answer this Question**

**Related Questions**

Physics - A discus thrower (with arm length of 1.2 m) starts from rest and ...

physics - A discus thrower (with arm length of 1.2 m) starts from rest and ...

physics - The flywheel of a steam engine begins to rotate from rest with a ...

Physics - The flywheel of a steam engine begins to rotate from rest with a ...

physics - The flywheel of a steam engine begins to rotate from rest with a ...

physics help please.... - After fixing a flat tire on a bicycle you give the ...

Physics - You are riding a merry-go-round on the rim which is turning ...

Physics - A rotating wheel requires 8.00 s to rotate 29.0 revolutions. Its ...

physics - Starting from rest at t = 0 s, a wheel undergoes a constant angular ...

physics - Starting from rest at t = 0 s, a wheel undergoes a constant angular ...