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Engineering Mechanics

Engineering Mechanics
The process of finding out the resultant force is called __________ of forces.

Composition
Decomposition
None of these
Resolution

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Engineering Mechanics
A differential pulley block has larger and smaller diameters of 100 mm and 80 mm respectively. Its velocity ratio is

20
10
5
40

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Engineering Mechanics
If ‘P’ is the force acting on the body, ‘m’ is the mass of the body and ‘a’ is the acceleration of the body, then according to Newton's second law of motion,

P/m.a = 0
P × m.a = 0
P + m.a = 0
P - m.a = 0

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Engineering Mechanics
The wheels of a moving car possess

Kinetic energy of rotation only
Kinetic energy of translation and rotation both
Potential energy only
Kinetic energy of translation only

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Engineering Mechanics
The friction experienced by a body, when at rest, is known as

Static friction
Coefficient of friction
Dynamic friction
Limiting friction

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Engineering Mechanics
If a number of forces are acting at a point, their resultant will be inclined at an angle 'θ' with the horizontal, such that

tanθ = ΣV × ΣH
tanθ = ΣH/ΣV
tanθ = √(ΣV + ΣH)
tanθ = ΣV/ΣH

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