## Applied Mechanics and Graphic Statics If the given forces P₁, P₂, P₃ and P₄ are such that the force polygon does not close, then the system will

Always reduce to a resultant force
Both (A) and (C)
Always reduce to a couple
Be in equilibrium

## Applied Mechanics and Graphic Statics A uniform pyramid and a uniform prism of same height lie with their base on the surface. Which is more stable ?

pyramid
prism
both equally stable
None of these

## Applied Mechanics and Graphic Statics Pick up the incorrect statement from the following. In a simple harmonic motion

Velocity is minimum at the end of the stroke
Acceleration is minimum at the end of the stroke
Acceleration is zero at the mean position
Velocity is maximum at its mean position

(n - 1)
n
n (n - 1)/2
n/2

## Applied Mechanics and Graphic Statics A block in the shape of a parallelepiped of sides 1m × 2m × 3m lies on the surface. Which of the faces gives maximum stable block?

2 m × 3 m
1 m × 2 m
Equally stable on all faces
1 m × 3 m

2/√3 l
½ l
l/√2
¾ l