APPLIED MECHANICS AND GRAPHIC STATICS QUIZ

The vertical reaction at the support ‘A’ of the structure shown in below figure, is Applied Mechanics and Graphic Statics mcq question image

3 t

2 t

5 t

4 t

TRUE ANSWER : ?
YOUR ANSWER : ?

The force acting on a point on the surface of a rigid body may be considered to act

At the centre of gravity of the body

At any point on the surface normal to the line of action of the force

On the periphery of the body

On any point on the line of action of the force

TRUE ANSWER : ?
YOUR ANSWER : ?

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?

Both reach the bottom simultaneously with equal rotational energy at bottom

Sphere with lesser rotational energy at bottom than cylinder

Cylinder with greater rotational energy at bottom than sphere

Sphere with greater rotational energy at bottom than cylinder

TRUE ANSWER : ?
YOUR ANSWER : ?

A hoop of radius 3 m weighs 100 kg. It rolls along a horizontal floor so that at its centre of mass has a speed of 200 mm/sec. The work required to stop the hoop is

8 J

2 J

6 J

4 J

TRUE ANSWER : ?
YOUR ANSWER : ?

The following statement is one of the laws of Dynamic friction

All of these

The force of friction always acts in a direction opposite to that in which a body is moving

For moderate speeds the force of friction remains constant but decreases slightly with the increase of speed

The magnitude of the kinetic friction bears a constant ratio to the normal reaction between two surfaces. The ratio being slightly less than that in the case of limiting friction

TRUE ANSWER : ?
YOUR ANSWER : ?

One end of a light string 4 m in length is fixed to a point on a smooth wall and the other end fastened to a point on the surface of a smooth sphere of diameter 2.25 m and of weight 100 kg. The reaction between the sphere and the wall of the arrangement made is

102.5 kg

108.5 kg

105.5 kg

110 kg

TRUE ANSWER : ?
YOUR ANSWER : ?

For perfectly elastic bodies, the value of coefficient of restitution is

Zero

Between 0 and 1

0.5

1

TRUE ANSWER : ?
YOUR ANSWER : ?

A load of 500 kg was lifted through a distance of 13 cm. by an effort of 25 kg which moved through a distance of 650 cm. The mechanical advantage of the lifting machine is

18

15

26

20

TRUE ANSWER : ?
YOUR ANSWER : ?

The shape of a suspended cable under its own weight, is

Parabolic

Catenary

Circular

Elliptical

TRUE ANSWER : ?
YOUR ANSWER : ?

In case of S.H.M. the period of oscillation (T), is given by

T = 2ω/π²

T = 2/ω

T = π/2ω

T = 2π/ω

TRUE ANSWER : ?
YOUR ANSWER : ?