Applied Mechanics and Graphic Statics A projectile is fired with a velocity of 100.3 m/sec. at an elevation of 60°. The velocity attained by the projectile when it is moving at a height of 100 m, is 75 m/sec 70 m/sec 80 m/sec 90 m/sec 75 m/sec 70 m/sec 80 m/sec 90 m/sec ANSWER DOWNLOAD EXAMIANS APP
Applied Mechanics and Graphic Statics The maximum displacement of a particle executing S.H.M. corresponds to Zero potential energy and maximum kinetic energy Maximum kinetic energy and maximum potential energy Minimum kinetic energy and minimum potential energy Zero kinetic energy and maximum potential energy Zero potential energy and maximum kinetic energy Maximum kinetic energy and maximum potential energy Minimum kinetic energy and minimum potential energy Zero kinetic energy and maximum potential energy ANSWER DOWNLOAD EXAMIANS APP
Applied Mechanics and Graphic Statics One end of an elastic string of natural length ‘l’ and modulus ‘X’ is kept fixed while to the other end is attached a particle of mass m which is hanging freely under gravity. The particle is pulled down vertically through a distance ‘x’, held at rest and then released.The motion is None of these A simple harmonic motion A damped oscillatory motion A rectilinear motion with constant speed None of these A simple harmonic motion A damped oscillatory motion A rectilinear motion with constant speed ANSWER DOWNLOAD EXAMIANS APP
Applied Mechanics and Graphic Statics The centre of gravity of a plane lamina will not be at its geometrical centre if it is a Right angled triangle Equilateral triangle Rectangle Circle Right angled triangle Equilateral triangle Rectangle Circle ANSWER DOWNLOAD EXAMIANS APP
Applied Mechanics and Graphic Statics If a flywheel increases its speed from 10 rpm to 20 rpm in 10 seconds, then its angular acceleration is —rad/sec 10 None of these —rad/sec 20 —rad/sec 30 —rad/sec 10 None of these —rad/sec 20 —rad/sec 30 ANSWER DOWNLOAD EXAMIANS APP
Applied Mechanics and Graphic Statics The piston of a steam engine moves with a simple harmonic motion. The crank rotates 120 r.p.m. and the stroke length is 2 meters. The linear velocity of the piston when it is at a distance of 0.5 metre from the centre, is 8.88 m/sec 5.88 m/sec 10.88 m/sec 12.88 m/sec 8.88 m/sec 5.88 m/sec 10.88 m/sec 12.88 m/sec ANSWER DOWNLOAD EXAMIANS APP