A 220g block on a 60.0cm -long string swings in a circle on a horizontal, frictionless table at 90.0rpm .
1.What is the speed of the block?
2.What is the tension in the string?
Can you also please show your work so I know how you get the answer. Thank you for the help
1.What is the speed of the block?
2.What is the tension in the string?
Can you also please show your work so I know how you get the answer. Thank you for the help
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1) Angular speed = 2*Pi*f
and f= 90rpm/60 (to find the revolutions per second) f=1.5
hence Angular speed = 2*pi*1.5 = 9.4 rad/s
2) The tension must be equal to the centripetal force of the string so...
T= mass*radius*( Angular Speed squared) )
T=0.22*0.6*88.36
T= 12N
and f= 90rpm/60 (to find the revolutions per second) f=1.5
hence Angular speed = 2*pi*1.5 = 9.4 rad/s
2) The tension must be equal to the centripetal force of the string so...
T= mass*radius*( Angular Speed squared) )
T=0.22*0.6*88.36
T= 12N