Related Questions
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The resultant of the two forces P and Q is R. If Q is doubled, the new resultant is perpendicular to P. Then
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Moment of inertia of a rectangular section having width (b) and depth (d) about an axis passing through its C.G. and parallel to the depth (d), is
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4
The force induced in the string AB due to the load W, as shown in the below figure is
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Moment of inertia of a triangular section of base (b) and height (h) about an axis through its base, is
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A particle moves along a straight line such that distance (x) traversed in t seconds is given by x = t² (t - 4), the acceleration of the particle will be given by the equation
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The unit of force in S.I. system of units is
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The Cartesian equation of trajectory is (where u = Velocity of projection, α = Angle of projection, and x, y = Co-ordinates of any point on the trajectory after t seconds.)
A. y = (gx²/2u² cos²α) + x. tanα
B. y = (gx²/2u² cos²α) - x. tanα
C. y = x. tanα - (gx²/2u² cos²α)
D. y = x. tanα + (gx²/2u² cos²α)
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The coefficient of friction depends on
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A redundant frame is also called __________ frame.
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The angular velocity (in rad/s) of a body rotating at N revolutions per minute is
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A framed structure, as shown in the below figure, is a
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The range of projectile (R) on an upward inclined plane is
A. g. cos² β/2u². sin (α + β). cos α
B. 2u². sin (α + β). cos α/g. cos² β
C. g. cos² β/2u². sin (α - β). cos α
D. 2u². sin (α - β). cos α/g. cos² β
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If u1 and u2 are the velocities of two moving bodies in the same direction before impact and v1 and v2 are their velocities after impact, then coefficient of restitution is given by
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The angle between two forces when the resultant is maximum and minimum respectively are:
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The range of projectile on a downward inclined plane is ________ the range on upward inclined plane for the same velocity of projection and angle of projection.
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The centre of percussion of a solid cylinder of radius r resting on a horizontal plane will be
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A flywheel on a motor goes from rest to 1000 rpm in 6 sec. The number of revolutions made is nearly equal to
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Which of the following is not the unit of distance?
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Moment of inertia of a circular section about an axis perpendicular to the section is
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Which of the following is the example of lever of first order?
C. Pair of clinical tongs
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The time of flight of a projectile on downward inclined plane depends upon
B. Angle of inclination of the plane
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The C.G. of a solid hemisphere lies on the central radius 3r
A. At distance from the plane base 3r
B. At distance from the plane base 3r
C. At distance from the plane base 3r
D. At distance from the plane base
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The periodic time (T) is given by (where, ω = Angular velocity of particle in rad/s.)
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Static friction is always __________ dynamic friction.
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The friction experienced by a body, when at rest, is known as
D. Coefficient of friction
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A cable with a uniformly distributed load per horizontal meter run will take the following shape
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The moment of the force P about O as shown in the below figure is
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A weight of 1000 N can be lifted by an effort of 80 N. If the velocity ratio is 20, the machine is
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The velocity of a particle (v) moving with simple harmonic motion, at any instant is given by (where r = Amplitude of motion, and y = Displacement of the particle from mean position.)
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Three forces acting on a rigid body are represented in magnitude, direction and line of action by the three sides of a triangle taken in order. The forces are equivalent to a couple whose moment is equal to
B. Twice the area of the triangle
C. Half the area of the triangle