Solving the Parabolic Motion Problem: A Sphere with Unusual Weight and Size

AI Thread Summary
The discussion focuses on solving a physics problem involving the parabolic motion of a hammer throw. Key tasks include calculating the hammer's initial speed, the athlete's angular speed at the moment of release, and the centripetal force exerted just before the throw. Additionally, participants are encouraged to write the trajectory equation and determine the maximum height coordinates, along with calculating kinetic and potential energy at that point. There is also a mention of using kinematic equations for both linear and circular motion to approach the problem effectively. Overall, participants are urged to begin their calculations to receive further guidance.
Lord_Biscotto
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Homework Statement
An athlete throws the hammer at an angle of about 39.95 ° reaching the
distance of 86.74 m. The tool consists of a sphere weighing 7.26 kg and radius
0.06 cm and a chain and a handle for a total length of 1.195 m. The height from
from which the tool started was about 1.7 meters. The total turning radius is 1.95 m.
1. Calculate how fast the hammer was thrown
2. Calculate the angular speed of rotation of the athlete at the moment of the throw.
3. Calculate the centripetal force exerted by the athlete immediately before the release (assuming
a uniform circular motion and neglecting the force of gravity)
4. Write the trajectory equation and draw its graph. Calculate the coordinates of the
point of greatest height.
5. Assuming that once launched, the hammer rotates on itself at the angular speed of
0.2 rounds per second calculate the kinetic energy and potential energy at the point of maximum altitude.
Note: the moment of inertia of the hammer is 0.2 kg * m2
Relevant Equations
i dont really know hot to write equations on pc
i have no clue how to start please help me
 
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Lord_Biscotto said:
Homework Statement:: An athlete throws the hammer at an angle of about 39.95 ° reaching the
distance of 86.74 m. The tool consists of a sphere weighing 7.26 kg and radius
0.06 cm and a chain and a handle for a total length of 1.195 m. The height from
from which the tool started was about 1.7 meters. The total turning radius is 1.95 m.
1. Calculate how fast the hammer was thrown
2. Calculate the angular speed of rotation of the athlete at the moment of the throw.
3. Calculate the centripetal force exerted by the athlete immediately before the release (assuming
a uniform circular motion and neglecting the force of gravity)
4. Write the trajectory equation and draw its graph. Calculate the coordinates of the
point of greatest height.
5. Assuming that once launched, the hammer rotates on itself at the angular speed of
0.2 rounds per second calculate the kinetic energy and potential energy at the point of maximum altitude.
Note: the moment of inertia of the hammer is 0.2 kg * m2
Relevant Equations:: i don't really know hot to write equations on pc

i have no clue how to start please help me
Welcome to PF. :smile:

To write equations you can look at the LateX Guide link below the Edit window. You can also insert Greek letters and square root signs using the Greek Alphabet available under the little Parthenon icon to the left of the Table icon.

Start by listing the Relevant Equations. Those would be the kinematic equations for motion under a constant acceleration field (like gravity in this case). There are kinematic equations for linear motion and for circular motion, and it looks like you will use both in this problem.

We need to see you start the work before we can offer tutorial help. That's in the PF rules.
 
a sphere weighing 7.26 kg and radius 0.06 cm
Very heavy material ? Or a typo ?
:welcome: !​

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