A train of mass `2xx10^(5)` kg has a constant speed of 20 `ms^(-1)` up a hill inclined at `theta=sin^(-1)((1)/(50))` to the horizontal when the engine is working at `8xx10^(5)` W. Find the resistance to motion of the trian. (Take ,g=9.8 `ms^(-2)`).

A railway engine of mass 12,000 kg is moving at constant speed of 5m*s^(-1) up an inclined of 15^@ . Calculate the power of the engine. Given g=9.8 m*s^(-2) .

A train has a constant speed of 40 ms^(-1) on a level road against resistive force of magnitude 3xx10^(4) N . Find the power of the engine.

A train has a constant speed of 40 ms^(-1) on a level road against resistive force of magnitude 3xx10^(4) N . Find the power of the engine.

A particle of mass 0.2 kg has an intial speed of 5 ms^(-1) at the bottom of a rough inclined plane of inclination 30^(@) and vertical height 0.5 m . What is the speed of the particle as it reaches the top of the inclined plan ? (Take mu = 1//sqrt3 , g = 10 ms^(-2) ) .

A particle of mass 0.2 kg has an intial speed of 5 ms^(-1) at the bottom of a rough inclined plane of inclination 30^(@) and vertical height 0.5 m . What is the speed of the particle as it reaches the top of the inclined plan ? (Take mu = 1//sqrt3 , g = 10 ms^(-2) ) .

Mass of a body is 5 kg. What is its weight? [Take g=9.8 ms^(-2) ]