HARD
11th West Bengal Board
IMPORTANT
Earn 100

Explain why the force of a spring is a conservative force.

Important Questions on Work, Energy and Power

HARD
11th West Bengal Board
IMPORTANT
A Text Book of PHYSICS PART I : CLASS 11>Chapter 9 - Work, Energy and Power>EXERCISE>Q 15
Calculate the potential energy stored in a spring when it is compressed.
HARD
11th West Bengal Board
IMPORTANT
A Text Book of PHYSICS PART I : CLASS 11>Chapter 9 - Work, Energy and Power>EXERCISE>Q 16
Prove that mechanical energy remains constant when a body moves up and down a smooth inclined plane.
MEDIUM
11th West Bengal Board
IMPORTANT
A Text Book of PHYSICS PART I : CLASS 11>Chapter 9 - Work, Energy and Power>EXERCISE>Q 17
Define elastic collision. Show that in an elastic collision, the relative velocity of approach before collision is equal to the relative velocity of separation after collision?
HARD
11th West Bengal Board
IMPORTANT
A Text Book of PHYSICS PART I : CLASS 11>Chapter 9 - Work, Energy and Power>EXERCISE>Q 18
Explain what happens when a body has a head-on elastic collision with another body of equal mass.
HARD
11th West Bengal Board
IMPORTANT
A Text Book of PHYSICS PART I : CLASS 11>Chapter 9 - Work, Energy and Power>EXERCISE>Q 18
Explain what happens when a very light has a head-on elastic collision with a very heavy body at rest.
HARD
11th West Bengal Board
IMPORTANT
A Text Book of PHYSICS PART I : CLASS 11>Chapter 9 - Work, Energy and Power>EXERCISE>Q 18
Explain what happens when a very heavy body has a head-on elastic collision with a very light body at rest.
HARD
11th West Bengal Board
IMPORTANT
A Text Book of PHYSICS PART I : CLASS 11>Chapter 9 - Work, Energy and Power>EXERCISE>Q 19
When is a collision called an inelastic collision? When is it called a perfectly inelastic collision? Find the loss in kinetic energy of two bodies of equal mass having an inelastic collision. When this loss of energy has the maximum value?
HARD
11th West Bengal Board
IMPORTANT
A Text Book of PHYSICS PART I : CLASS 11>Chapter 9 - Work, Energy and Power>EXERCISE>Q 20
Consider that light consists of very light elastic corpuscles. Show that laws of reflection of light follows from the conservation laws of momentum and kinetic energy.