41. In the structure shown in below figure, the member which carries zero force, is
42. If two equal forces of magnitude P act at an angle $$\theta $$, their resultant, will be
43. A projectile is thrown at an angle ‘α’ to the horizontal with velocity ‘v’. It will have the maximum centripetal acceleration
44. Varingon’s theorem of moment’s states
45. The resultant of two forces acting at right angles is 5 kgf and if they act at an angle of 60°, it is 37 kgf. The magnitudes of the forces are:
46. A particle is executing simple harmonic motion in a line 1.0 m long. If the time of one complete vibration is 1 sec, then the maximum velocity of the particle is
47. If A is the amplitude of particle executing simple harmonic motion, then the total energy E of the particle is
48. If A is the amplitude of particle executing simple harmonic motion, then the total energy E of the particle is
49. ‘P’ is the force acting on a body whose mass is ‘m’ and acceleration is ‘f’. The equation P - mf= 0, is known as
50. For lifting a load of 50 kg through a distance of 2.5 cm, an effort of 12.5 kg is moved through a distance of 40 cm. The efficiency of the lifting machine, is
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