A train rounds an unbanked circular bend of radius 30 m at a speed of `54 km//h` The mass of the train is `10^(6)` kg What provides the centripetal force required for this purpose ? The engine or the rails ? What is the angle of banking required to prevent out the rails ?

A train of mass 10^(5) kg rounds a curve of radius 100m at a speed of 20 m/s . If the track is not , then the thrust on the outer rail of the track is

An aeroplane requires for take off a speed of 80 km//h the run on the ground being 100 m The mass of aeroplane is 10^(4) kg and ground is 0.2 What is the maximum force required by the engine of the plane for take off ?

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.

At what should a highway be banked for cars travelling at a speed of 100 km/h if the radius of the road is 400 m and no frictional forces are involved?

A car of mass 1200 kg is travelling around a circular path of radius 250 m with a steady speed of 72 km/hour. What is its angular momentum ?

A car of mass 2500 kg is moving in a circular track of diameter 100m with a speed of 72 km//h . What is the angular momentum of the car ?

A car travels on a flat, circular track of radius 200 m at 30 ms^(-1) and has a centripetal acceleration = 4 .5 ms^(-2) . (a) If the mass of the car is 1000 kg , what frictional force is required to provide the acceleration ? (b) If the coefficient of static friction is 0.8, what is the maximum speed at which the car can circle the track ?

The two rails of a railway track are 1.7 m apart. At a circular curve of radius 1.5 km, a train should have an optimum speed of 108 kmph so that there is no side thrust on the outer rail. Find the angle of banking of the track and the elevation of the outer rail above the inner rail .

A train has to negotiate a curve of radius 400 m .The speed of the train is 72 km//h. If the distance between the two rails is 1 m ,then the outer rail will be raised over the inner rail by (g=10m//s^(2))

A car of mass kg rounds a curve of radius 250 m at 90 km/h. Find the centripetal force acting on it .