Applied Mechanics and Graphic Statics
The gravitational force makes a satellite go round the earth in a circular orbit, if it is projected with an initial velocity of
11.11 km/sec at a height of 37,400 km
8.04 km/sec at a height of 285 km
11.26 km/sec, the satellite escapes the pull of the earth
The force of friction always acts in a direction opposite to that in which a body is moving
All of these
The magnitude of the kinetic friction bears a constant ratio to the normal reaction between two surfaces. The ratio being slightly less than that in the case of limiting friction
For moderate speeds the force of friction remains constant but decreases slightly with the increase of speed
EXAMIANS