The hammer throw is a track and field event in which a 8.35-kg ball (the \"hamme
ID: 1358303 • Letter: T
Question
The hammer throw is a track and field event in which a 8.35-kg ball (the "hammer"), starting from rest, is whirled around in a circle several times and released. It then moves upward on the familiar curving path of projectile motion. In one throw, the hammer is given a speed of 34.9 m/s. For comparison, a .22 caliber bullet has a mass of about 2.76 g and, starting from rest, exits the barrel of a gun with a speed of 419 m/s. Determine the work done to launch the motion of (a) the hammer and (b) the bullet.
Explanation / Answer
Part A : used Work Eenrgy theorem
W = KEf - KEi
W = 0.5 mv^2 - 0
W = 0.5 * 8.35 * 34.9 *34.9
W = 5085.19 Joules or 5.08 e 3 J
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part B :
W = KEf - KEi
W - 0.5 mv^2 - 0
W = 0.5 * 0.0276 * 419*419
W = 2422.74 Joules or 2.42 e 3 J
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