1. masses measured can be 2 or 3 sf. (90 g or 100 g)
2. Angle only 2 sf ( 48degrees) . Average of 48 and 49 is 49 degrees.
3. Cos angle = 0.67 ( 2 sf ) and no unit.
4. the reciprocral of quantity in m has unit equal to m-1.
5. The intercept of the graph can be read from the graph only if the graph starts with o at the xais. It has to be calculated otherwise.
6. The graph(point to last point) must exceed by half the total graph space.
Please note that you are to spend sufficient time to linearise carefully before starting. Otherwise no straight line means no results of investigation.
