Question

Take a spring of medium stiffness, about 20 cm in length. Fix the upper end of the spring
to a rigid support. On the lower end attach a scale pan of known mass so that the system
hangs vertically. Pull the pan 1-2 cm downwards and release. The pan will oscillate up
and down. Measure the time of 20 oscillations with the help of a stop watch and calculate
the time period of oscillation of pan. Now place a middle size pebble on the pan, set it in
oscillations and determine the time period of oscillation again. Calculate the mass of the
pebble using the data obtained from your observations.
(Lesson-13)

Can someone please answer this? i need it ASAP. there are no answers for this question on the app. ​

Answer 1

Explanation:

Unit of pressure: pascal (Pa)

Pressure is the amount of force applied perpendicular to the surface of an object per unit area and the for it is p (or P). The SI unit for pressure is the pascal (Pa), equal to one newton per square metre (N/m2, or kg·m−1·s−2).