What is the relationship between each force, if three concurrent forces acting on a body according to Lami's theorem?

Mechanical Engineering : Engineering Mechanics - Quiz(MCQ)

Inversely proportional to the sine of the angle between the other two forces

Directly proportional to the sine of the angle between the other two forces

Directly proportional to the cosine of the angle between the other two forces

Inversely proportional to the cosine of the angle between the other two forces

Correct Answer : Option (B) : Directly proportional to the sine of the angle between the other two forces

Explanation : If three concurrent forces act on a body, each force is proportional to the sine of the angle between the other forces, according to Lami’s theorem.

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The coefficient of restitution for elastic bodies is one.

Correct

Incorrect

Both (A) and (B)

Neither (A) nor (B)

Correct Answer : Incorrect

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Which of the following type of screws is used in the machines?

Round-threaded

Helical-threaded

Square-threaded

Rectangle-threaded

Correct Answer : Square-threaded

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The term 'force' may be defined as an agent which produces or tends to produce, destroys or tends to destroy motion.

Agree

Disagree

Both (A) and (B)

None of the above

Correct Answer : Agree