Qualification > Sciences
Edexcel PHYSICS Doubts
The Golden Girl =D:
what about the first and last part of the graph (increase in V and decrease in V) ?
dk bose:
Mr Astarmathsandphysics, could you please try my sum one more time,cause ur answer to it is wrong. the correct answer is 1.05m. plz cross check it with ur solution , its 4m the A2 physics revision guide.
astarmathsandphysics:
Can you repost the question I got wrong
dk bose:
here is the question-
A ceiling fan is turning at a rate of 100 revolutions per minute. A spider
is clinging to a blade of the fan. If the spider experiences a centripetal
acceleration greater than 0.3g, it will lose its grip on the blade and be flung
off. How far from the centre of the fan can the spider safely go?
Plzz try it one more time and give the solutions as fast as possible.!!!!!
astarmathsandphysics:
v^2/r>0.3g
r<v^2/0.3g
v=100/60*circumference of circle=(100/60)*2 pi r msince 100/60 revs per second
so r <(100/60 *2 pi r)^2/0.3g=37.3r^2 so r<1/37.3=0.027m
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