Q.1
A retarding force on a body does not
Q.2
If the tension in a cable supporting a lift moving upwards is twice the tension when the lift is moving downwards, the acceleration of the lift, is
Q.3
Minimum potential energy of a system will be in the position of
Q.4
The velocity ratio of an inclined plane of inclination ‘θ’ with horizontal for lifting a load is
Q.5
A square hole is punched out of a circular lamina, the diagonal of the square being the radius of the circle. If ‘r’ is the radius of the circle, the C.G. of the remainder from the corner of the square on the circumference will be
Q.6
The practical units of work, is
Q.7
Two balls of masses 3 kg and 6 kg are moving with velocities of 4 m/sec and 1 m/sec respectively, towards each other along the line of their centers. After impact the 3 kg ball comes to rest. This can happen only if the coefficient of restitution between the balls is
Q.8
The velocity ratio of the differential wheel and axle is
Q.9
A solid cylinder of mass M and radius R rolls down an inclined plane without slipping. The acceleration of center of mass of rolling cylinder is (where ‘g’ is acceleration due to gravity and 0 is inclination of plane with horizontal.)
Q.10
The graphical method of determining the forces in the members of a truss is based on
Q.11
The shape of a suspended cable under its own weight, is
Q.12
Which of the following represents the state of neutral equilibrium?
Q.13
The unit of Moment of Inertia of a body, is
Q.14
The angle of projection at which the horizontal range and maximum height of a projectile are equal to
Q.15
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
Q.16
According to Kennedy's theorem, if three bodies have plane motions, their instantaneous centers lie on
Q.17
A body is dropped from a height of 100 m and at the same time another body is projected vertically upward with a velocity of 10 m/sec. The two particles will
Q.18
The maximum value of the horizontal range for a projectile projected with a velocity of 98 m/sec is
Q.19
A geo-stationary satellite is one which orbits the earth with a velocity of rotation of
Q.20
The potential energy of a particle falling through a straight shaft drilled through the earth (assumed homogenous and spherical) is proportional to (where r is the distance of’the particle from centre of the earth)
Q.21
A stone is whirled in a vertical circle, the tension in the string, is maximum
Q.22
A sphere and a cylinder having the same mass and radii start from rest and roll down the same inclined plane. Which body gets to the bottom first?
Q.23
A light rope is loaded with many equal weights at equal horizontal intervals. The points of suspension on the rope lie on a
Q.24
The angle of projection at which the horizontal range and maximum height of a projectile are equal to
Q.25
A rigid body is in a stable equilibrium if the application of any force
Q.26
Two forces of 6 Newtons and 8 Newtons which are acting at right angles to each other, will have a resultant of
Q.27
A particle moving with a simple harmonic motion, attains its maximum velocity when it passes
Q.28
A Second's pendulum gains 2 minutes a day. To make it to keep correct time its length
Q.29
The centre of gravity of a homogeneous body is the point at which the whole
Q.30
The tension in a cable supporting a lift
0 h : 0 m : 1 s