1
TS EAMCET 2022 (Online) 18th July Morning Shift
MCQ (Single Correct Answer)
+1
-0

The potential energy of an object is $U(x)=\left(5 x^2-4 x^3\right) \mathrm{J}$, where $x$ is the position in metre. The position at which the force becomes zero is

A

$\frac{1}{2} m$

B

$\frac{5}{6} \mathrm{~m}$

C

$\frac{1}{3} \mathrm{~m}$

D

$\frac{2}{3} m$

2
TS EAMCET 2022 (Online) 18th July Morning Shift
MCQ (Single Correct Answer)
+1
-0

A time varying force acts on a ball of mass 100 g for 2 ms . The force versus time curve is shown below. If the initial speed of the ball is $10 \mathrm{~m} / \mathrm{s}$, then the speed of ball after 2 ms is

A

$210 \mathrm{~m} / \mathrm{s}$

B

$410 \mathrm{~m} / \mathrm{s}$

C

$200 \mathrm{~m} / \mathrm{s}$

D

$400 \mathrm{~m} / \mathrm{s}$

3
TS EAMCET 2022 (Online) 18th July Morning Shift
MCQ (Single Correct Answer)
+1
-0

Four masses are arranged along a circle of radius 1 m as shown in the figure. The centre of mass of this system of masses is at

TS EAMCET 2022 (Online) 18th July Morning Shift Physics - Center of Mass and Collision Question 8 English

A

$-\frac{1}{5} \hat{\mathbf{i}}-\frac{1}{5} \hat{\mathbf{j}}$

B

$\frac{1}{5} \hat{\mathbf{i}}+\hat{\mathbf{j}}$

C

$\hat{\mathbf{i}}-\frac{1}{5} \hat{\mathbf{j}}$

D

$\frac{1}{5} \hat{\mathbf{i}}+\frac{1}{5} \hat{\mathbf{j}}$

4
TS EAMCET 2022 (Online) 18th July Morning Shift
MCQ (Single Correct Answer)
+1
-0

A body starting at $t=0$ from origin oscillates simple harmonically with a period of 4 s . After what time will its kinetic energy by $75 \%$ of its total energy?

A

$1 / 2 \mathrm{~s}$

B

$1 / 3 \mathrm{~s}$

C

$1 / 4 \mathrm{~s}$

D

1 s

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