Applied Mechanics and Graphic Statics
A train weighing 196 tonnes experiences a frictional resistance of 5(11/22) per tonne. The speed of the train at the top of a down gradient 1 in 78.4 is 36 km/hour. The speed of the train after running 1 km down the slope, is

3 √5 m/sec
5 √10 m/sec
10 √5 m/sec
5 √3 m/sec

ANSWER DOWNLOAD EXAMIANS APP

Applied Mechanics and Graphic Statics
The following is not a law of static friction:

The force of friction always acts in a direction opposite to that in which the body tends to move
The magnitude of the limiting friction bears a constant ratio to the normal reaction between two surfaces
The force of friction depends upon the roughness of the surface
The force of friction is dependent upon the area of contact

ANSWER DOWNLOAD EXAMIANS APP
MORE MCQ ON Applied Mechanics and Graphic Statics