1.

a+particle+moves+along+a+circle+of+radius+(20/π)+with+constant+tangential+acceleration+.+If+the+velocity+of+the+particle+is+80+m/s+at+the+end+of+the+second+revolution+after+motion+has+began.+What+is+the+tangential+acceleration?

Answer»

A particle is moving along a circle of radius 20/\pi20/π with constant tangential acceleration. The velocity of the particle is 80m/s at the end of 2nd  revolution after MOTION has BEGAN. Then the tangential acceleration is

ANSWER

R=\dfrac{20}{\pi}r=  

π

20

​  

 

In two revolution , DISTANCE is s=2\times 2\pi r=80ms=2×2πr=80m

Now, v^2=2asv  

2

=2as for zero INITIAL speed.

\implies a=\dfrac{v^2}{2s}=\dfrac{80\times 80}{2\times 80}⟹a=  

2s

v  

2

 

​  

=  

2×80

80×80

​  

 

\implies a=40m/s^2⟹a=40m/s  

2

Explanation:hi



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