A boy on a cycle pedals around a circle of 20 metres radius at a speed of `20 "metres"//sec`. The combined mass of the boy and the cycle is 90 kg . The angle that the cycle makes with the vertical so that it may not fall is `(g = 9.8 m//sec^(2))`

A boy on a bicycle pedals around a circle of 22 m radius at a speed of 10m/s. The combined mass of the boy and the bicycle combined mass of the boy and the bicycle is 80 kg. (a) What is the centripetal force exerted by the pavement on the bicycle? (b) What is the upward force exerted by the pavement on the bicycle? See fig.

A cyclist goes around a circular track of circumference 410 m in 20 s. Find the angle that his cycle makes with the vertical.

A cyclist goes round a circular track of 440 metres length in 20 seconds Find the angle that his cycle makes with the verticle.

The minimum speed of a bucket full of water whirled in a vertical circle of radius 10 m at the highest point so that the water may not fall is (g=10ms^(-2))

A boy is cycling with a speed of 10 km h^(-1) on a hill of slope 1/20 . The weight of the boy and the cycle is 120 kg . Calculate the work done by the man per minute . Also find his horse power .

A stone of mass 4kg is whirled in a horizontal circle of radius 1m and makes 2 rev/sec. The moment of inertia of the stone about the axis of rotation is