Question

When the branch of a tree is shaken violently, the leaves fall. This happening can be explained by:
1. Joules 1^st law of motion
2. Newton's 1^st law of motion
3. Joules 2^nd law of motion
4. Newton's 3^rd law of motion

Answer 1

Correct Answer - Option 2 : Newton's 1^st law of motion

The correct answer is Newton's 1st law of motion.

• The branch of a tree is shaken violently; the leaves fall due to Newton's 1^st law of motion.
• Due to the phenomenon of the law of inertia, the leaves try to be at rest when a tree is shaken, but the branch and trunk are in motion which causes the leaves to fall from its branch.
• Newton's 1st law of motion states that a body is at rest; it will remain at rest unless it is acted upon by some external forces.

 

• Newton’s 2nd law states that the acceleration of an object as produced by a net force is directly proportional to the magnitude of the net force, in the same direction as the net force, and inversely proportional to the mass of the object.
• The Newton’s 3rd law states that for every action there is an equal and opposite reaction.

 

• The joule’s first law shows the relationship between heat produced by flowing electric current through a conductor.
                                                \(​​​​Q = I^2 R T\)
• Joule's second law states that the internal energy of an ideal gas is independent of its volume and pressure, depending only on its temperature.