EASY
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IMPORTANT
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Area under force-displacement graph is equal to

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Important Questions on Work, Energy and Power

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NDA & NA EE
IMPORTANT
Physics Crash Course NDA & NA EE>Chapter 6 - Work, Energy and Power>Exercise 1>Q 2
A weight lifter is holding a weight of 80kg on his shoulder for 10 s. Work done by the lifter is
EASY
NDA & NA EE
IMPORTANT
Physics Crash Course NDA & NA EE>Chapter 6 - Work, Energy and Power>Exercise 1>Q 3
A man pulls a bucket out of a well using a rope. The work done by the man is____.
EASY
NDA & NA EE
IMPORTANT
Physics Crash Course NDA & NA EE>Chapter 6 - Work, Energy and Power>Exercise 1>Q 4
A man pulls a bucket out of a well by means of a rope. The work done by the gravity is
EASY
NDA & NA EE
IMPORTANT
Physics Crash Course NDA & NA EE>Chapter 6 - Work, Energy and Power>Exercise 1>Q 5
Positive work is said to be done if the force and displacement are
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NDA & NA EE
IMPORTANT
Physics Crash Course NDA & NA EE>Chapter 6 - Work, Energy and Power>Exercise 1>Q 6
A man pushes a wall and fails to displace it. He does
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NDA & NA EE
IMPORTANT
Physics Crash Course NDA & NA EE>Chapter 6 - Work, Energy and Power>Exercise 1>Q 7
Dimensional formula for work is:
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NDA & NA EE
IMPORTANT
Physics Crash Course NDA & NA EE>Chapter 6 - Work, Energy and Power>Exercise 1>Q 8
A block of mass 0.1kg slides down a rough inclined plane. If the speed of the block decreases from 10 m s-1 to 5 m s-1, the thermal energy developed in the process is
EASY
NDA & NA EE
IMPORTANT
Physics Crash Course NDA & NA EE>Chapter 6 - Work, Energy and Power>Exercise 1>Q 9
A particle of mass 'm' moving with a speed ' v' strikes a stationary particle of mass '2 m' and sticks to it. The speed of the system after collision will be