A glider (of mass Mg) floats frictionlessly on an air track. A string and pulley connect the glider to a hanging mass (of mass Mh). When the glider is released it accelerates due to the force of gravity on the hanging mass. The acceleration of the system (y, in m/s2) is measured as a function of the glider mass (x, in grams). (The hanging mass is not changed.) The acceleration is measured with an accuracy of 0.06 m/s2.
Newton's laws predict that the acceleration will be given by the formula:
1/a = (1/g) ( 1 + Mg/Mh)
where g = 9.8 m/s2 is the acceleration of gravity. Therefore the data should fit an "inverse y" relationship, where
A = 1/g
B = 1/(gMh)
X (g) | Y (m/s2) |
---|---|
180 | 4.83 |
220 | 4.25 |
340 | 3.32 |
410 | 3.08 |
530 | 2.41 |
570 | 2.30 |
650 | 1.92 |
800 | 1.73 |
840 | 1.66 |
850 | 1.56 |