Engineering Mechanics - Study Mode

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[#321] Which of the following are vector quantities?

(A) Linear displacement

(B) Linear velocity

(C) Linear acceleration

(D) All of these

(E) Angular displacement

(F) Angular velocity

(G) Angular acceleration

(H) All of these

Correct Answer

(D) All of these
(H) All of these

[#322] The C.G. of a right circular solid cone of height h lies at the following distance from the base

(A) $$frac{{ ext{h}}}{2}$$

(B) $$frac{{ ext{J}}}{3}$$

(C) $$frac{{ ext{h}}}{6}$$

(D) $$frac{{ ext{h}}}{4}$$

Correct Answer

(D) $$frac{{ ext{h}}}{4}$$

[#323] When a body of mass 'm' attains a velocity 'v' from rest in time 't', then the kinetic energy of translation is

(A) mv 2

(B) mgv 2

(C) 0.5 mv 2

(D) 0.5 mgv 2

Correct Answer

[#324] Which of the following is not the unit of distance?

(A) Angstrom

(B) Light year

(C) Micron

(D) Milestone

Correct Answer

(D) Milestone

Explanation

Solution: This question asks us to identify which option is not used to measure distance. Let's look at each option: Angstrom (Å): This is a very small unit of length, often used to measure the size of atoms and molecules. It's a unit of distance. Light year (ly): This is a very large unit of distance. It represents the distance light travels in one year. It's a unit of distance. Micron (µm): Also known as a micrometer, this is a unit of length equal to one millionth of a meter. It's used to measure small distances, making it a unit of distance. Milestone: A milestone is a marker indicating distance along a road or path. It is not a unit of measurement itself
it's a physical marker showing a point in a distance. Therefore, Milestone is not a unit of distance. The other options are all units used to measure length or distance.