##185 lb~~84.2 kg## This question can be answered by using dimensional analysis. The relationship between kilograms and pounds is ##1 kg=2.20 lb##. This gives us two […]
##k=sqrt(I/M)=(gh)/omega^2=sqrt(I/M-h^2)=sqrt((T^2gh)/(4pi^2)-h^2)## For an object of mass M and I about an arbitrary axis the radius of gyration k is that distance from the same axis of […]
##v=omegaR## Linear velocity ##v## is equal to the angular speed ##omega## times the radius from the center of motion ##R##. We can derive this relationship from […]
##(a) 4.42s## ##(b) 55.25m## ##(a)## We get the time taken to reach the maximum height by using the vertical component of the velocity: ##v=u+at## ##:.0=25sin60-9.8t## ##:.t=61.65/9.8=2.21s## […]
##60miles/hr=96.5606km/hr## ##1## ##mile=1.60934## ##km## Multiply these both by ##60## to see that ##60## ##miles=96.5606## ##km## Thus ##60miles/hr=96.5606km/hr##
##2.3s## (2sf) Assuming dropped from rest vertically with no air resistance. Assuming that we are treating the clam as falling vertically from rest with no air […]