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If a projectile is fired with an initial velocity of 10 m/sec at an angle of 60° to the horizontal, its horizontal and vertical velocity at the highest point of trajectory are
An object is projected at an angle θ into the atmosphere using a complex mechanism. The projectile travels with a specific velocity 'u' and makes an angle θ with the horizontal plane. In order for the projectile to travel maximum distance, the value of θ should be
A semicircular disc rests on a horizontal surface with its top flat surface horizontal and circular portion touching down. The coefficient of friction between semi circular disc and horizontal surface is µ. This disc is to be pulled by a horizontal force applied at one edge and it always remains horizontal. When the disc is about to start moving, its top horizontal force will
A semi-circular disc rests on a horizontal surface with its top flat surface horizontal and circular portion touching down. The coefficient of friction between semi-cricular disc and horizontal surface is i. This disc is to be pulled by a horizontal force applied at one edge and it always remains horizontal. When the disc is about to start moving, its top horizontal force will
The range of projectile will be maximum for a given velocity of projectile, when the angle of projection ($$\alpha $$) is
A projectile fired from the ground follows a parabolic path. At what position will the speed of projectile be minimum?
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
A projectile is launched with an initial velocity of magnitude a at an angle ? to the horizontal. Find its maximum vertical displacement, ignoring effects due to the air.
The layout of a shaft supported on bearings at A & B is shown. Power is supplied by means of a vertical belt on pulley B which is then transmitted to pulley C carrying a horizontal belt. The angle of wrap is 180’ and coefficient of friction is 0.3. Maximum permissible tension in the rope is 3kN. The radius of pulley at B & C is 300mm and 150mm. If bending moment on point B in horizontal plate is M and in vertical plane is m, then the net bending moment at point B is?
The angle of projection at which the horizontal range and maximum height of a projectile are equal to