Banner 0
Banner 1
Banner 2
Banner 3
Banner 4
Banner 5
Banner 6
Banner 7
Banner 8
Banner 9

Q.

Consider the rotation of a rod of mass m and length l from position AB to AB'. Which of the following statements are correct?

see full answer

High-Paying Jobs That Even AI Can’t Replace — Through JEE/NEET

🎯 Hear from the experts why preparing for JEE/NEET today sets you up for future-proof, high-income careers tomorrow.
An Intiative by Sri Chaitanya

a

Centre of gravity of the rod is lowered by l/2.

b

Loss of gravitational potential energy is l/2 mgl.

c

Angular velocity is 3g/l.

d

Rotational kinetic energy is ml2ω26

answer is A.

(Unlock A.I Detailed Solution for FREE)

Best Courses for You

JEE

JEE

NEET

NEET

Foundation JEE

Foundation JEE

Foundation NEET

Foundation NEET

CBSE

CBSE

Detailed Solution

Equating loss of gravitational potential energy with the gain of rotational kinetic energy, we get12Iω2=12mgl12×ml23×ω2=12mglω=3glRotational kinetic energy =12ml23ω2=ml2ω26
Watch 3-min video & get full concept clarity
score_test_img

courses

No courses found

Get Expert Academic Guidance – Connect with a Counselor Today!

whats app icon