Engineering Mechanics Objective Questions and Answers

225. If a system in equilibrium consists of six equal concurrent coplanar forces, each force acting in a different direction, then the angle between any pair of fordes is

226. Choose the correct statement

A. No acceleration is produced in the body when it moves with a constant speed along a circle

B. No work gets done on it when it moves with a constant speed along a circle

C. No force acts on the body when the body moves with a constant speed along a circle

D. Its velocity remains constant when the body moves with a constant speed along a circle

Discussion

227. A bucket of water weighing 10 kg is pulled up from a well 20 metre deep by a rope weighing 1 kg/m length, then the work done is

228. A ship will sink if it does not displace water equal to its own

229. If the momentum of a given particle is doubled then its kinetic energy will

230. The atmosphere of earth is retained due to

A. Gravitational pull of earth

B. Mean speed of molecules being much less than the escape velocity

C. As a result of cohesion, adhesion, osmosis etc.

D. Spherical shape of earth

Discussion

231. If two bodies, one light and other heavy, have equal kinetic energy, which one has a greater momentum

A. The heavy body

B. The light body

C. Both have equal momentum

D. Unpredictable

Discussion

Mechanical Engineering Objective Questions { Engineering Mechanics }