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Engineering Mechanics

Engineering Mechanics
One kg force is equal to

9.8 N
8.9 N
12 N
7.8 N

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Engineering Mechanics
If a number of forces are acting at a point, their resultant is given by

√[(∑V)2 +(∑H)2 +2(∑V)(∑H)]
(∑V)2 +(∑H)2 +2(∑V)(∑H)
(∑V)2 + (∑H)2
√[(∑V)2 + (∑H)2]

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Engineering Mechanics
A block of mass 20 kg lying on a rough horizontal plane is connected by a light string passing over a smooth pulley to another mass 5 kg, which can move freely in the Vertical direction, as shown in the below figure. The tension in the string will ___________ with the increase in coefficient of friction.

Not be effected
Increase
None of these
Decrease

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Engineering Mechanics
The moment of inertia of a solid sphere of mass ‘m’ and radius ‘r’ is

2mr²/5
2mr²/3
mr²
mr²/2

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Engineering Mechanics
If the number of pulleys in a system is equal to its velocity ratio, then it is a __________ system of pulleys.

First
None of these
Second
Third

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Engineering Mechanics
A couple produces

Combined translatory and rotational motion
None of these
Translatory motion
Rotational motion

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MORE MCQ ON Engineering Mechanics

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