Physics - Study Mode
[#856] When a body falls from an aeroplane, there is increase in its
Correct Answer
(C) Acceleration
Explanation
Solution: The energy possessed by a body by virtue of its motion is called kinetic energy. Potential Energy is the energy possessed by virtue of its position or configuration. When a body falls from an aeroplane, there is increase in its acceleration.
[#857] The moment of inertia of a body does not depend upon
Correct Answer
(C) The angular speed of the body
Explanation
Solution: Moment of inertia depends on distribution of body, axis of rotation and mass of the body. It is not dependent on angular velocity of the body.
[#858] Newton's first law of motion gives the concept of
Correct Answer
(D) Inertia
Explanation
Solution: Newton's first law of motion is sometimes referred to as the law of inertia. An object at rest stays at rest and an object in motion stays in motion with the same speed and in the same direction unless acted upon by an unbalanced force.
[#859] For every action, there is an equal and opposite reaction, is Newton's
Correct Answer
(C) Third law
Explanation
Solution: For every action, there is an equal and opposite reaction, is Newton's third law.
[#860] Gravitational force is maximum at which place
Correct Answer
(A) Poles
Explanation
Solution: Gravitational force is maximum at Poles. The gravitational force is almost equal in every where in the earth. The resultant force is maximum in pole.