1
WB JEE 2022
MCQ (Single Correct Answer)
+1
-0.25
Change Language

A particle is subjected to two simple harmonic motions in the same direction having equal amplitudes and equal frequency. If the resultant amplitude is equal to the amplitude of the individual motion, the phase difference ($$\delta$$) between the two motion is

A
$$\delta = {\pi \over 3}$$
B
$$\delta = {{2\pi } \over 3}$$
C
$$\delta = \pi $$
D
$$\delta = {\pi \over 2}$$
2
WB JEE 2022
MCQ (Single Correct Answer)
+1
-0.25
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A body of mass m is thrown with velocity u from the origin of a co-ordinate axes at an angle $$\theta$$ with the horizon. The magnitude of the angular momentum of the particle about the origin at time t when it is at the maximum height of the trajectory is proportional to

A
u
B
u2
C
u3
D
independent of u
3
WB JEE 2022
MCQ (Single Correct Answer)
+1
-0.25
Change Language

Three particles, each of mass 'm' grams situated at the vertices of an equilateral $$\Delta$$ABC of side 'a' cm (as shown in the figure). The moment of inertia of the system about a line AX perpendicular to AB and in the plane of ABC in g-cm2 units will be

WB JEE 2022 Physics - Center of Mass Question 5 English

A
2 ma2
B
$${3 \over 2}$$ ma2
C
$${3 \over 4}$$ ma2
D
$${5 \over 4}$$ ma2
4
WB JEE 2022
MCQ (Single Correct Answer)
+1
-0.25
Change Language

A body of mass m is thrown vertically upward with speed $$\sqrt3$$ ve, where ve is the escape velocity of a body from earth surface. The final velocity of the body is

A
0
B
2 ve
C
$$\sqrt3$$ ve
D
$$\sqrt2$$ ve
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