176. The force, by which the body is attracted, towards the centre of the earth, is called
177. Coplaner concurrent forces are those forces which
178. The power developed by a body acted upon by a torque T newton metre (N - m) and revolving at ω radian/s is given by
179. The time taken by a particle for one complete oscillation is known as periodic time.
180. The velocity ratio of a first system of pulleys with 4 pulleys is
181. One joule means that
182. The moment of inertia of a sphere of mass m and radius r, about an axis tangential to it, is
183. The velocity ratio for the first system of pulleys is(where n is the number of pulleys.)
184. The ideal angle of banking provided on the curves on roads depends upon
185. If a pendulum is taken 1 km below the earth surface in a mine, it will __________ in time.
186. The moment of inertia of a thin disc of mass m and radius r, about an axis through its centre of gravity and perpendicular to the plane of the disc is
187. The linear velocity of a body rotating at ω rad / s along a circular path of radius r is given by
188. A machine which is capable of doing work in the reversed direction, after the effort is removed, is called a non-reversible machine.
189. The forces which do not meet at one point and their lines of action do not lie on the same plane are known as
190. A non-reversible machine is also called a self-locking machine.
191. Mass moment of inertia of a thin rod about its one end is __________ the mass moment of inertia of the same rod about its mid-point
192. Moment of inertia of a hollow rectangular section as shown in the below figure about Y-Y axis, is not the same as that about X-X axis.
193. The angle of the inclined plane at which a body just begins to slide down the plane, is called helix angle.
194. The forces, which meet at one point and their lines of action also lie on the same plane, are known as
195. The amount by which the outer edge of the rail is raised, is known as super-elevation.
196. The unit of energy in S.I. units is
197. The angle of inclination of the plane at which the body begins to move down the plane, is called
198. The potential energy stored by a spring in compression, is called strain energy.