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Applied Mechanics and Graphic Statics

Applied Mechanics and Graphic Statics
A particle is dropped from a height of 3 m on a horizontal floor, which has a coefficient of restitution with the ball of 1/2. The height to which the ball will rebound after striking the floor is

1.0 m
1.5 m
0.75 m
0.5 m

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Applied Mechanics and Graphic Statics
For lifting a load of 50 kg through a distance of 2.5 cm, an effort of 12.5 kg is moved through a distance of 40 cm. The efficiency of the lifting machine, is

0.75
0.7
0.65
0.6

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Applied Mechanics and Graphic Statics
The velocity of a body fallen from height ‘h’, on reaching the ground is given by

v = 2gh
v = 1/√(2gh)
v = √(2gh)
v = 2gh²

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Applied Mechanics and Graphic Statics
In SI units, the units of force and energy are respectively

Dyne and erg
kg wt and joule
Newton and watt
Newton and joule

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Applied Mechanics and Graphic Statics
The resultant of the forces acting on a body will be zero if the body

Moves along a curved path
Rotates
Does not move at all
Moves with variable velocity in a straight line

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Applied Mechanics and Graphic Statics
If two equal forces of magnitude ‘P’ act at an angle ‘θ’, their resultant, will be

P cos θ/2
P tan θ/2
2P sin θ/2
2P cos θ/2

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