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ruslelena
14 days ago
7

While riding a multispeed bicycle, the rider can select the radius of the rear sprocket that is fixed to the rear axle. The fron

t sprocket of a bicycle has radius 12.0 cm. If the angular speed of the front sprocket is 0.600 rev/s, what is the radius of the rear sprocket for which the tangential speed of a point on the rim of the rear wheel will be 5.00 m/s? The rear wheel has radius 0.310 m.
Physics
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Water drops fall from the edge of a roof at a steady rate. a fifth drop starts to fall just as the first drop hits the ground. a
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The height from which the drops fall is 3.57m

Assuming the drops fall at a rate of 1 drop every t seconds. The initial drop takes 5t seconds to hit the ground. The second drop reaches the bottom of the 1.00 m window in 4t seconds, while the third drop reaches the top of the window in 3t seconds.

Calculate the distances covered by the second and third drops s₂ and s₃, which begin from rest at the building's roof.

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The height of the window s is described by,

s=s_2-s_3\\ (1.00 m)=8gt^2-4.5gt^2=3.5gt^2\\ t^2=\frac{1.00 m}{(3.5)(9.8m/s^2)} =0.02915s^2

The first drop has reached the base after taking 5t seconds.

The roof height h represents the distance covered by the first drop and is expressed as,

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the height of the roof remains at 3.57 m



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