PSY 166 CUNY Lehman Static Equilibrium Fluids Vibration and Waves Questions Could you please give thorough explanation as to how to solve the problems. The topics of these question includes: static equilibrium , Fluids, Vibrations and waves, Sounds, thank you!! PHYSICS 166, SPRING 2020, Test 3 NAME:______________________
1. A 20-kg girl is sitting on a seesaw 1.5m away from the pivot. How far
from the pivot should her 60-kg grandma be in order to balance the
seesaw? Show all your work.
2. Can the cranes steel cable of diameter 1cm hold a load of mass
4,500kg without breaking? Show all your work.
3. At what speed does the water emerge from the hole in a bottle, that is
made 20cm below the water level? Show all your work.
4. A metal sphere is suspended from a light string of length 25cm. How
many oscillations per second does it make? Show all your work.
5. What is the frequency of the second harmonic in a pipe of length 0.5m
open from both ends? Show all your work.
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