A train runs along an unbanked circular track 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 — Hie engine or the rails ? What is the angle of banking required to prevent wearing out of the rail ?

The radius of curvature of a railway track at a place where the train is moving at a speed of 72 km h^-1 is 625 m.The distance between the rails is 1.5 m.Find the angle and the elevation of the outer rail so that there may be no side pressure on the rails. (g=9.8 m s^(-2)) .

Two parallel rail tracks run north-south. Train A moves north with a speed of 54 km h^-1 and train B moves south with a speed of 90 km h^-1 . What is the relative velocity of B with respect to A

Two parallel rail tracks run north-south. Train A moves north with a speed of 54 km h^-1 and train B moves south with a speed of 90 km h^-1 .relative velocity of ground with respect to B?

A railway engine weghing 40 metric ton is travelling along a level track at a speed of 54 km//h .What additional power is required to maintain the same speed up an incline rising 1 in 49,given mu=0.1,g=9.8m s^-2 ?

A trolley of mass 200 kg moves with a uniform speed of 36 km//h on a frictionless track. A child of mass 20 kg runs on the trolley from one end to the other (10 m away) with a speed of 4 m s^-1 relative to the trolley in a direction opposite to the its motion, and jumps out of the trolley. What is the final speed of the trolley ? How much has the trolley moved from the time the child begins to run ?

Two parallel rail tracks run north-south. Train A moves north with a speed of 54 km h^-1 and train B moves south with a speed of 90 km h^-1 .Velocity of a monkey running on the roof of the train A against its motion (With a velocity of 18 km h^-1 with respect to the train A) as observed by a man standing on the ground?

Gasoline has an enthalpy of combustion 24000 kJ/mol gallon. When gasoline burns in an automobile engine, approximately 30% of the energy released is used to produce mechanical work. The remainder is lost as heat transfer to the engine's cooling system. As a start on estimating how much heat transfer is required, calculate what mass of water could be heated from 25^(@)C to 75^(@)C by the combustion of 1.0 gallon of gasoline in an automobile? (Given : C(H_(2)O)=4.18 J//g^(@)C ) a) 34.45 kg b) 80.383 kg c) 22 kg d) 224 kg

To stimulate car accidents auto manufacturers study the collisions of moving cars with mounted springs of different spring constants. Consider a typical simulation with a car of mass 1000 kg moving with a speed 18 km/h on a smooth road and colliding with a horizontally mounted spring of a spring constant 6.25 10^3N/m. what is the maximum compression of the spring?

The two rails of a railway track, insulated from each other and the ground, are connected to a milli voltmeter. What is the reading of the milli voltmeter when a train travels at a speed of 180 km//hours along the track, given that the vertical components of earth's magnitic field is 0.2xx10^(_4) weber//m^(2) & the rails are separated by 1 meter?