Government RRB Question:

WHAT IS DIFFERENCE BETWEEN FORCE AND WEIGHT?

Weight=mgh
where m=mass
g=gravity
h=height

Force=ma
where m=mass
a=accelaration

weight=Force X Distance

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FRICATION FORCE ALWAYS OPPSES TO ........?	Which of the following transformer of same rating can be used for paralling a)star-delta and delta-star b)star-star and delta-delta c)delta-delta and delta-star