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Work, Energy, and PowerClass 11thPhysics NCERT Exemplar Solutions Class 11th Chapter Sixphysics ncert solutions class 11thPhysics

Two identical steel cubes (masses 50g, side 1cm) collide head-on face to face with a speed of 10cm/s each. Find the maximum compression of each. Young's modulus for steel = Y= 2 * 1011 N/m2.

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8 months ago

This is a long answer type question as classified in NCERT Exemplar

m =50g = 50 * 10 3 k g

Side = 1cm = 0.01m

Speed v = 0.1m/s

Young's modulus= 2 * 10 11 N / m 2

According to the formula

F/A= Y ? L L

And F= K ? L  where K is the compression in the spring.

K= YA/L = YL

Initial KE= 2 (1/2mv2)= 5 * 10 - 4 J

Final PE= 2 (1/2)K ( ? L )2

? L = K E E = K E Y L  = 5 * 10 - 4 2 * 10 11 * 0.1 = 1.58 * 10 - 7 m

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Physics NCERT Exemplar Solutions Class 11th Chapter Six 2025

Physics NCERT Exemplar Solutions Class 11th Chapter Six 2025

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