AP EAPCET 2024 - 21th May Evening Shift | Work, Energy and Power Question 5 | Physics

A machine with efficiency $\frac{2}{3}$ used 12 J of energy in lifting 2 kg block through certain height and it is allowed to fall through the same. The velocity while it reach the ground is

$\sqrt{2} \mathrm{~ms}^{-1}$

$2 \mathrm{~ms}^{-1}$

$2 \sqrt{2} \mathrm{~ms}^{-1}$

$0.2 \mathrm{~ms}^{-1}$

AP EAPCET 2024 - 21th May Morning Shift

MCQ (Single Correct Answer)

-0

The upper $\left(\frac{1}{n}\right)$ th of an inclined plane is smooth and the remaining lower part is rough with coefficient of friction $\mu_k$. If a body starting from rest at the top of the inclined plane will again come to rest at the bottom of the plane, then the angle of inclination of the inclined plane is

$\sin ^{-1}\left[\left(\frac{n}{n-1}\right) \mu_k\right]$

$\sin ^{-1}\left[\left(\frac{n-1}{n}\right) \mu_k\right]$

$\tan ^{-1}\left[\left(\frac{n}{n-1}\right) \mu_k\right]$

$\tan ^{-1}\left[\frac{(n-1) \mu_k}{n}\right]$

AP EAPCET 2024 - 21th May Morning Shift

MCQ (Single Correct Answer)

-0

A spring of spring constant $200 \mathrm{~N}-\mathrm{m}^{-1}$ is initially stretched by 10 cm from the unstretched position. The work to be done to stretch the spring further by another 10 cm is

3 J

6 J

9 J

12 J

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Questions Asked from MCQ (Single Correct Answer)

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