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Projectile Motion Essay

844 words - 4 pages

To investigate the trajectory of a small ball as it rolls off a surface which is inclined to the horizontal.

To investigate the trajectory of a two dimensional motion

* Ramp
* Wooden block
* Pendulum bob
* Plumb line
* Steel ball
* Wooden board
* Carbon paper
* Meter rule
* Plasticine

1. A ramp has been set up at the edge of a bench as shown in the Figure 4-1.
2. Suspend a plum-line from the edge of the bench as shown in Figure 4-2.
3. Mount a wooden board horizontally using two clamps so that the board is situated
about the bottom of the ramp.
4. Place a sheet of blank paper ...view middle of the document...

1) | y/cm
(±0.1) | yx |
16.6 | 50.0 | 3.012 |
14.5 | 45.0 | 3.103 |
13.2 | 40.0 | 3.030 |
12.1 | 35.0 | 2.893 |
11.3 | 30.0 | 2.655 |

Gradient = 0.0602
y-intercept = k = 2.1241



u= √115.35
u=10.74 cm s-1

Projectile motion is a form of motion in which an object or particle (called a projectile) is thrown obliquely near the earth's surface, and it moves along a curved path under the action of gravity only. The path followed by a projectile motion is called its trajectory. Projectile motion only occurs when there is one force applied at the beginning of the trajectory, after which there is no force in operation apart from gravity.
Once the object leaves the table, it experiences a downward acceleration equal to gravity. Thus the vertical velocity is continually increasing. The horizontal velocity remains constant. The two vectors are added together to get the velocity at each point on the path.

If an object is pointed at an angle, the motion is essentially the same except that there is now an initial vertical velocity. Because of the downward acceleration of gravity, Vy continually decreases until it reaches its highest point, at which it begins to fall...

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