Applied mechanics and graphic statics

1. The necessary condition of equilibrium of a body is: A. Algebraic sum of horizontal components of all the forces must be zero B. Algebraic sum of vertical components of all the forces must be zero C. Algebraic sum of the moments of the forces about a point must be zero D. All (A), (B) and (C)

Algebraic sum of horizontal components of all the forces must be zero
Algebraic sum of vertical components of all the forces must be zero
Algebraic sum of the moments of the forces about a point must be zero
All (A), (B) and (C)

Detailed SolutionThe necessary condition of equilibrium of a body is: A. Algebraic sum of horizontal components of all the forces must be zero B. Algebraic sum of vertical components of all the forces must be zero C. Algebraic sum of the moments of the forces about a point must be zero D. All (A), (B) and (C)

2. Newton’s law of Collision of elastic bodies states that when two moving bodies collide each other, their velocity of separation A. Is directly proportional to their velocity of approach B. Is inversely proportional to their velocity of approach C. Bears a constant ratio to their velocity of approach D. Is equal to the sum of their velocities of approach

Is directly proportional to their velocity of approach
Is inversely proportional to their velocity of approach
Bears a constant ratio to their velocity of approach
Is equal to the sum of their velocities of approach

Detailed SolutionNewton’s law of Collision of elastic bodies states that when two moving bodies collide each other, their velocity of separation A. Is directly proportional to their velocity of approach B. Is inversely proportional to their velocity of approach C. Bears a constant ratio to their velocity of approach D. Is equal to the sum of their velocities of approach

3. Two circular discs of same weight and thickness are made from metals having different densities. Which disc will have the larger rotational inertia about its central axis? A. Disc with larger density B. Disc with smaller density C. Both discs will have same rotational inertia D. None of the above

Disc with larger density
Disc with smaller density
Both discs will have same rotational inertia
None of the above

Detailed SolutionTwo circular discs of same weight and thickness are made from metals having different densities. Which disc will have the larger rotational inertia about its central axis? A. Disc with larger density B. Disc with smaller density C. Both discs will have same rotational inertia D. None of the above

5. The gravitational force makes a satellite go round the earth in a circular orbit, if it is projected with an initial velocity of A. 8.04 km/sec at a height of 285 km B. 11.11 km/sec at a height of 37,400 km C. 11.26 km/sec, the satellite escapes the pull of the earth D. All the above

8.04 km/sec at a height of 285 km
11.11 km/sec at a height of 37,400 km
11.26 km/sec, the satellite escapes the pull of the earth
All the above

Detailed SolutionThe gravitational force makes a satellite go round the earth in a circular orbit, if it is projected with an initial velocity of A. 8.04 km/sec at a height of 285 km B. 11.11 km/sec at a height of 37,400 km C. 11.26 km/sec, the satellite escapes the pull of the earth D. All the above

7. From a solid cylinder of height 8 cm and radius 4 cm, a right circular cone is scooped out on the same base and having the same height as that of the cylinder. The C.G. of the remainder is at a height of A. 4.5 cm B. 5.0 cm C. 5.25 cm D. 5.5 cm

4.5 cm
5.0 cm
5.25 cm
5.5 cm

Detailed SolutionFrom a solid cylinder of height 8 cm and radius 4 cm, a right circular cone is scooped out on the same base and having the same height as that of the cylinder. The C.G. of the remainder is at a height of A. 4.5 cm B. 5.0 cm C. 5.25 cm D. 5.5 cm

8. Force polygon method is applicable for A. any copianar force system B. a system of parallel forces only C. concurrent copianar force system D. non-concurrent copianar force system

any copianar force system
a system of parallel forces only
concurrent copianar force system
non-concurrent copianar force system

Detailed SolutionForce polygon method is applicable for A. any copianar force system B. a system of parallel forces only C. concurrent copianar force system D. non-concurrent copianar force system

9. If two forces acting at a point are in equilibrium, they must be equal in magnitude and their line of action must be along A. The same line in the same sense B. The same line in opposite sense C. The perpendicular to both the lines D. None of these

The same line in the same sense
The same line in opposite sense
The perpendicular to both the lines
None of these

Detailed SolutionIf two forces acting at a point are in equilibrium, they must be equal in magnitude and their line of action must be along A. The same line in the same sense B. The same line in opposite sense C. The perpendicular to both the lines D. None of these

10. Force polygon method is applicable for A. Any coplanar force system B. A system of parallel forces only C. Concurrent coplanar force system D. Non-concurrent coplanar force system

Any coplanar force system
A system of parallel forces only
Concurrent coplanar force system
Non-concurrent coplanar force system

Detailed SolutionForce polygon method is applicable for A. Any coplanar force system B. A system of parallel forces only C. Concurrent coplanar force system D. Non-concurrent coplanar force system

Page 1Page 2Page 3Page 4Page 5
Test 1Test 2Test 3Test 4Test 5Test 6Test 7Test 8Test 9Test 10
Exit mobile version