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Applied Mechanics and Graphic Statics

Applied Mechanics and Graphic Statics
A projectile has maximum range of 40 m on a horizontal plane. If angle of projection is a and the time of flight is 1 second, then sin a must be about (Assume g = 10 m/sec²)

43833
43835
43834
43832

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Applied Mechanics and Graphic Statics
If a flywheel increases its speed from 10 rpm to 20 rpm in 10 seconds, then its angular acceleration is

—rad/sec 20
—rad/sec 10
None of these
—rad/sec 30

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Applied Mechanics and Graphic Statics
A particle moves along a straight line such that distance ‘x’ traversed in ‘t’ seconds is given by x = t²(t + 1), the acceleration of the particle, will be

6t + 2
6t - 2
3t³ - 2t
3t² + 2t

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Applied Mechanics and Graphic Statics
The dimensions of power are.

M’L-‘T*
M’L’r2
M’L2T2
M’L’T3

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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

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

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Applied Mechanics and Graphic Statics
M.I. of solid sphere, is

πr4/2
⅔ Mr²
½ Mr²
Mr²

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