Related Questions
What is the correct answer?
4
In SI units, the units of force and energy are respectively
What is the correct answer?
4
The height at which the end of a rope of length l should be tied so that a man pulling at the other end may have the greatest tendency to overturn the pillar, is
What is the correct answer?
4
If a body moves in such a way that its velocity increases by equal amount in equal intervals of time, it is said to be moving with
B. A uniform acceleration
C. A variable acceleration
D. A variable retardation
What is the correct answer?
4
If g1 and g2 are the gravitational accelerations on two mountains A and B respectively, the weight of a body when transported from A to B will be multiplied by
What is the correct answer?
4
The angular speed of a car while taking a circular turn of radius 100 m at 36 km/hour, is
What is the correct answer?
4
A simple pendulum of length l has an energy E, when its amplitude is A. If the length of pendulum is doubled, the energy will be
What is the correct answer?
4
A light rope is loaded with many equal weights at equal horizontal intervals. The points of suspension on the rope lie on a
What is the correct answer?
4
A retarding force on a body does not
A. Change the motion of the body
B. Retard the motion of the body
C. Introduce the motion of the body
What is the correct answer?
4
A projectile is fired at an angle θ to the vertical. Its horizontal range will be maximum when θ is
What is the correct answer?
4
Two forces act an angle of 120°. If the greater force is 50 kg and their resultant is perpendicular to the smaller force, the smaller force is
What is the correct answer?
4
The centre of gravity of a homogenous body is the point at which the whole
A. Volume of the body is assumed to be concentrated
B. Area of the surface of the body is assumed to be concentrated
C. Weight of the body is assumed to be concentrated
What is the correct answer?
4
The resultant of two forces acting at right angles is √34 kg and acting at 60° is 70 kg. The forces are
What is the correct answer?
4
The C.G. of the shaded area of the below figure whose curve OM is a parabola from y-axis, is
What is the correct answer?
4
The units of moment of inertia of an area are
What is the correct answer?
4
The angle which an inclined surface makes with the horizontal when a body placed on it is on the point of moving down, is called
What is the correct answer?
4
If the radius of the earth is 600 km the height of a mountain above sea level at the top of which a beat seconds pendulum at sea level, looses 27 seconds a day, is
What is the correct answer?
4
The unit of Moment of Inertia of a body, is
What is the correct answer?
4
A pilot flies a small plane in a vertical loop of radius r. At the top of its trajectory he experiences weightlessness. If the acceleration due to gravity is g, the speed of the plane at the top of its trajectory would be
What is the correct answer?
4
The motion of a particle is described by the relation x = t2- 10t + 30, where x is in metres and t in seconds. The total distance travelled by the particle from t = 0 to t = 10 seconds would be
What is the correct answer?
4
A force P of 50 N and another force Q of unknown magnitude act at 90° to each other. They are balanced by a force of 130 N. The magnitude of Q is
What is the correct answer?
4
In which of the following trusses, the method of substitution is required for determining the forces in all the members of the truss by graphic statics?
What is the correct answer?
4
The member forces in a statically in determinate truss
A. Can be obtained by graphic statics
B. Cannot be obtained by graphic statics
C. May be obtained by graphic statics
D. Can be obtained by graphic statics by trial and error
What is the correct answer?
4
A vehicle weighing w kg is to run on a circular curve of radius r. If the height of its centre of gravity above the road level is h and the distance between the centres of wheels is 2a, the maximum velocity, in order to avoid over turning, will be
What is the correct answer?
4
The ratio of kinetic energy and potential energy of a simple harmonic oscillator, at a displacement equal to half its amplitude is given by
What is the correct answer?
4
For a self-locking machine, the efficiency should be
What is the correct answer?
4
The graphical method of determining the forces in the members of a truss is based on
D. None of the two methods
What is the correct answer?
4
A square hole is made in a circular lamina, the diagonal of the square is equal to the radius of the circle as shown in below figure the shift in the centre of gravity is
A. r (π - 0.75)/(π - 0.5)
B. r (π - 0.25)/(π - 0.75)
C. r (π - 0.5)/(π - 0.75)
D. r (π - 0.5)/(π - 0.25)
What is the correct answer?
4
Work may be defined as
What is the correct answer?
4
When a body in equilibrium undergoes an infinitely small displacement, work imagined to be done, is known as
What is the correct answer?
4
The load shared by the member BC of the structure shown in below figure is