Question

A stone is whirled circle at the end of a rope of length0.5 m . find the velocity of the stone at 1) the lowest position, 2) a midway position, 3) the top,to just complete the circles
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Answer 1

Answer:

Here you go ..........

Explanation:

given that the length of rope = 0.5m = radius of the circle.

acceleration due to gravity (g) = 10m/s²

to find velocity in the following situations

(1) at the lowest position

Velocity of the stone = $\sqrt{5gr}$

                              = $\sqrt{5*10*0.5$

                              = $\sqrt{5*5}$

                              = = 5m/s

(2) in the midway

Velocity of the stone   = $\sqrt{3gr$

                                      = $\sqrt{3*10*0.5}$

                                      =  $\sqrt{15}$ m/s

(3) at the top

Velocity of the stone = $\sqrt{gr}$

                                     = $\sqrt{10*0.5}$

                                      = $\sqrt{5}$ m/s

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