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Mechanical Engineering - Engineering Mechanics

Exercise : Engineering Mechanics - Section 2
36.
Concurrent forces are those forces whose lines of action
lie on the same line
meet at one point
meet on the same plane
none of these
Answer: Option
Explanation:
No answer description is available. Let's discuss.
37.
Tension in the cable supporting a lift is more when the lift is moving __________ with an acceleration.
upwards
downwards
Answer: Option
Explanation:
No answer description is available. Let's discuss.
38.
According to the law of moments, if a number of coplaner forces acting on a particle are in equilibrium, then
their algebraic sum is zero
their lines of action are at equal distances
the algebraic sum of their moments about any point in their plane is zero
the algebraic sum of their moments about any point is equal to the moment of their resultant force about the same point.
Answer: Option
Explanation:
No answer description is available. Let's discuss.
39.
If u1 and u2 are the velocities of two moving bodies in the same direction before impact and v1 and v2 are their velocities after impact, then coefficient of restitution is given by
Answer: Option
Explanation:
No answer description is available. Let's discuss.
40.
Two bodies of masses m1,and m2 are hung from the ends of a rope, passing oyer a frictionless pulley as shown in the figure below. The acceleration of the string will be
Answer: Option
Explanation:
No answer description is available. Let's discuss.
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