1velocity will change as direction will change...
so d is correct....
and net acceleration could be towards the centre when there is no tangential accn so a is also correct
and b is also true
but c is false
A body is moving in a circular motion of constant radius
a)net acc of body may be towards centre of circle
b)net acc of body may not be towards centre of circle
c)KE=constant
d)velocity must change
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13 Answers
1
1c has to be true......centripetal force is a no-work force......so KE is constant.
1no aveek....c cant be correct...k.e will change....it wont be conserved....
look up vertical and horizontal circular motion for this...
24@aveek
whatif tangential force if it exists? ?
KE wont be constant then...
i hope u gt my point
1check this out
http://www.physicsclassroom.com/Class/circles/u6l1c.cfm
1but in case of a horizontal circle...ke is const......it changes in a vertical circle......
http://answers.yahoo.com/question/index?qid=20070605085732AAH1jLw
1aveek if the option was that k.e may be constant then it would be correct...but saying that k.e must be constant is altogether different thing......
1b and d is correct,i think...wat is d correct answer eureka??