**41. A body will be in translational equilibrium, if**

(a) (c) I F = 0 |
(b) p = 0 (d) L = 0 |

**42. The first condition of equilibrium of a body is satisfied if**

(a) Its linear velocity is zero

(b) Its linear acceleration is zero

41 3 *PHYSIC’S 1300K 1*

(c) Its angular acceleration is zero

(d) The vector sum of all the forces is zero

**43. The second condition of equilibrium is satisfied if**

(a) The vector sum of all the forces is zero

(b) The vector sum of all the torques is zero

(c) Its angular acceleration is zero

(d) Its angular velocity is zero

**44. The condition of complete equilibrium is satisfied if**

(a) Vector sum of all the torques is zero

(b) Vector sum of all the forces is zero

(c) Vector sum of all the forces and all torques is zero

(d) Angular acceleration is zero

**45. A body will be in rotational equilibrium only if the vector sum of**

**all the external torques acting on a body is equal to**

(a) Maximum (b) Unity

(c) Zero (d) Double

**46. The moment of linear momentum is called**

(a) Couple (b) Torque

(c) Angular momentum (d) Moment of force

**47. The unit of moment of inertia is**

(a) Kg (b) Kg-m

(c) Kg-ni^{2} (d) Kg-m^{-2}

**48. A body is said to be in complete equilibrium if**

(a) EF 0 (b) = 0

(c) EF = 0 and a 0 (d) EF = 0 and a = o

**49. A body is said to be in translational equilibrium provided .**

(a) The first condition of equilibrium is satisfied

(b) The second condition of equilibrium is satisfied

(c) No torque is acting on it

(d) Its trans;ational motion is not stopped

**50. Which of the following pairs does not have identical dimensions?**

(a) Mass and moment of inertia

(b) Momentum and impulse

(c) Torque and energy

(d) Energy and work

41. |
c |
42. |
d |
43. |
b |
44. |
c |

45. |
c |
46. |
c |
47. |
c |
48. |
d |

49. |
a |
50. |
a |