EASY
11th CBSE
IMPORTANT
Earn 100

Under what condition, the work done by a force is maximum and minimum?

Important Questions on Work, Energy and Power

MEDIUM
11th CBSE
IMPORTANT
Super Refresher Physics 11>Chapter 6 - Work, Energy and Power>SELF EVALUATION TEST>Q 9
A man is rowing a boat up a stream with respect to the shore. Is he doing a work? Explain.
EASY
11th CBSE
IMPORTANT
Super Refresher Physics 11>Chapter 6 - Work, Energy and Power>SELF EVALUATION TEST>Q 10
A man continues to push a rock for some time but fails to move it. What is the work done? Explain.
HARD
11th CBSE
IMPORTANT
Super Refresher Physics 11>Chapter 6 - Work, Energy and Power>SELF EVALUATION TEST>Q 11
What do you mean by positive and negative work? Show that the work done is equal to the area under the force-displacement curve?
MEDIUM
11th CBSE
IMPORTANT
Super Refresher Physics 11>Chapter 6 - Work, Energy and Power>SELF EVALUATION TEST>Q 12
What are the conservative and non-conservative forces? Explain with examples. Mention some of their properties?
HARD
11th CBSE
IMPORTANT
Super Refresher Physics 11>Chapter 6 - Work, Energy and Power>SELF EVALUATION TEST>Q 13
Show that the sum of the kinetic energy and potential energy of a freely falling body is conserved?
MEDIUM
11th CBSE
IMPORTANT
Super Refresher Physics 11>Chapter 6 - Work, Energy and Power>SELF EVALUATION TEST>Q 14
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?