According to which of the following laws of mechanics a body remains/continue in its state of rest or motion until it is disturbed by an external agent?

Mechanical Engineering : Engineering Mechanics - Quiz(MCQ)

Superposition law

Newtonâ€™s first law of motion

Newtonâ€™s second law of motion

Newtonâ€™s third law of motion

Correct Answer : Option (B) : Newtonâ€™s first law of motion

Explanation : Newton’s first law asserts that if a body is at rest or moving in a straight path at a constant speed, it will remain at rest or continue to move in a straight line at a constant speed until acted upon by a force.

Recently Updated in Engineering Mechanics Questions

The coefficient of restitution for elastic bodies is one.

Correct

Incorrect

Both (A) and (B)

Neither (A) nor (B)

Correct Answer : Incorrect

Explanation : Coefficient of restitution for elastic bodies is 0 - 1.

Coefficient of restitution for perfect elastic bodies is 1.

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

Round-threaded

Helical-threaded

Square-threaded

Rectangle-threaded

Correct Answer : Square-threaded

Explanation : In the machines, square threaded screws are employed. Because screws are commonly employed as fasteners. The fundamental benefit of screws is that the friction aids in the structure’s retention. Screws also aid in the fast and efficient joining of the structure.

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