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SL ARORA-Work, Energy and power-EXERCISE
- Give three examples of forces which are conservative in nature.
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- Friction is non-conservative force. How ?
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- Name the process in which (i) momentum is conserved but K.E. is not co...
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- A coolie with load on his head is walking on a horizontal platform. Wh...
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- An artificial satellite is at a height of 36,500 km above earth's surf...
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- Give two examples from daily life where according to physics, work don...
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- What is the source of KE of falling rain drops ?
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- State work-energy theorem.
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- What is spring constant ? What are its SI units?
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- Calculate the number of joules in 1 kWh?
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- Show that 1J = 10^7erg
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- How will the momentum of a body change if its kinetic energy is double...
03:18
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- Show graphically the variation of potential energy of an object thrown...
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- How does kinetic energy of a moving ball change if its speed is reduce...
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- What is the work done by centripetal force in moving a body through ha...
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- What is an elastic collision ?
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- Define the term work. Calculate the work done by a constant force. Is ...
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- Give the expression for work done if angle between force oversetrighta...
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- Define the term work and derive its SI unit. Write an expression for t...
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- How do we calculate work done by a force ? Write any two conditions un...
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