Physics Trayectory homework

In summary, a trajectory in physics is the path an object takes through space as it moves from one point to another, determined by factors such as initial velocity, launch angle, and external forces. It can be calculated using equations of motion and is affected by factors such as air resistance and the weight and shape of the object. A projectile is an object that follows a curved path, while a trajectory refers to the specific path it takes in a given situation.
  • #1
Physics Help!
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A body of mass m moves under the influence of force F(r). Given it's trayectory r(t), find F(r).

Attempt:
F(t) = M * d^r/dt^2


I don't know what to do after that...
 
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  • #2


Physics Help! said:
A body of mass m moves under the influence of force F(r). Given it's trayectory r(t), find F(r).

Attempt:
F(t) = M * d^r/dt^2


I don't know what to do after that...
That looks like a sufficient answer to me. :smile:
 
  • #3


Nothing else could really be done.
 

1. What is a trajectory in physics?

A trajectory in physics refers to the path an object takes through space as it moves from one point to another. It is determined by the initial velocity and launch angle of the object, as well as external forces such as gravity and air resistance.

2. How is the trajectory of an object calculated?

The trajectory of an object can be calculated using the equations of motion, which take into account the initial velocity, launch angle, and acceleration due to gravity. These equations can also be used to calculate the time of flight, maximum height, and range of the object.

3. What factors affect the trajectory of an object?

The trajectory of an object is affected by several factors, including the initial velocity, launch angle, air resistance, and external forces such as gravity and wind. The weight and shape of the object can also have an impact on its trajectory.

4. How does air resistance affect the trajectory of an object?

Air resistance, also known as drag, can have a significant impact on the trajectory of an object. As an object moves through the air, it experiences a force in the opposite direction of its motion, causing it to slow down and deviate from its original trajectory.

5. What is the difference between a projectile and a trajectory?

A projectile is an object that is launched into the air and moves along a curved path, while a trajectory refers to the actual path that the object takes. In other words, a trajectory is the specific example of a projectile's path in a given situation.

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