NEET and AIPMT NEET Physics Work,Energy and Power MCQ Questions Solved

A spring 40 mm long is stretched by the application of a force. If 10 N force required to stretch the spring through 1 mm, then work done in stretching the spring through 40 mm is

(a) 84J

(b) 68J

(c) 23J

(d) 8J

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Elastic potential energy

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#6 | Solved Problems on Potential Energy
#7 | Mechanical Energy

Concept Questions :-

Elastic potential energy

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#6 | Solved Problems on Potential Energy
#7 | Mechanical Energy

Concept Questions :-

Elastic potential energy

Since force is same

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#6 | Solved Problems on Potential Energy
#7 | Mechanical Energy

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Elastic potential energy

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#1 | Work: Definition
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Concept of work

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Power

(3)

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#6 | Solved Problems on Potential Energy
#7 | Mechanical Energy

Concept Questions :-

Elastic potential energy

(1)

When the string is fully compressed.
K.E. of the block = P.E. of the spring.

When the block comes to the original psotion, it will gain its K.E. from spring and the speed of the block will be same as before.

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#4 | Work Energy Theorem

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Work-Energy theorem

(1)

At the point, where the block leaves the circle T=0

Using conservation of energy from A to B-

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Work-Energy theorem

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#9 | Power

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Power

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