Engineering Mechanics
If a body is acted upon by a number of coplanar non-concurrent forces, it may

Rotate about itself without moving
Move in any one direction rotating about itself
All of these
Be completely at rest

ANSWER DOWNLOAD EXAMIANS APP

Engineering Mechanics
The Cartesian equation of trajectory is (where u = Velocity of projection, α = Angle of projection, and x, y = Co-ordinates of any point on the trajectory after t seconds.)

y = x. tanα + (gx²/2u² cos²α)
y = (gx²/2u² cos²α) + x. tanα
y = x. tanα - (gx²/2u² cos²α)
y = (gx²/2u² cos²α) - x. tanα

ANSWER DOWNLOAD EXAMIANS APP