A large heavy rock, a medium size stone and a small marble are dropped at the same time from the roof of a building. Neglecting
2 answers:
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Explanation:
Given that,
The radius of rain drop, r = 0.12 cm = 0.0012 m
The viscocity of air is,
Let the viscous force is,
The viscous force is given by :
Put all the values,
Answer:
Explanation:
Given data
For Part (a)
Starting with the -ve acceleration of the body (opposite to the gravitational force)
Using equation of motion
For Part (b)
Using the result in Part (a) we can substitute in other equation of motion to get time t:
For Part (c)
At state 2 where vo=0m/s and the acceleration is positive (same direction as the gravitational force)