Question

The centripetal force of 45N is required to revolve a stone of mass 100g along a circular path of radius 50cm. Find the constant speed of the stone. Please, answer me fast its urgent.

Answer 1

Centripetal force = 45 N, mass = 100 g = 0.1 kg
radius = 50 cm = 0.5 m
Centripetal force =  mv2/r
         45              =   0.1 v2/0.5
       45 *0.5/0.1 = v2
       22.5/0.1 = v2    
            225 = v2
              v = 15 m s-1

Answer 2

Concept Introduction:-

It could take the shape of a word or a numerical representation of a quantity's arithmetic value.

Given Information:-

We have been given that the centripetal force of $45$ N is required to revolve a stone of mass $100$ g along a circular path of radius $50$ cm.

To Find:-

We have to find that the constant speed of the stone.

Solution:-

According to the problem

Centripetal force $= 45$ N, mass $= 100$ g $= 0.1$ kg

radius $= 50$ cm $= 0.5$ m

$Centripetal force = mv_2/r\\ 45= 0.1 v_2/0.5\\ 45 \times 0.5/0.1 = v_2\\ 22.5/0.1 = v_2\\ 225 = v_2\\ v = 15 m s^{-1}$

Final Answer:-

The constant speed of the stone is $15 m s^{-1}$.

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