1
MHT CET 2023 14th May Morning Shift
MCQ (Single Correct Answer)
+1
-0

A string of length '$$L$$' fixed at one end carries a body of mass '$$\mathrm{m}$$' at the other end. The mass is revolved in a circle in the horizontal plane about a vertical axis passing through the fixed end of the string. The string makes angle '$$\theta$$' with the vertical. The angular frequency of the body is '$$\omega$$'. The tension in the string is

A
$$\mathrm{mL}^2 \omega$$
B
$$\mathrm{mL} \omega^2$$
C
$$\frac{\omega^2}{\mathrm{~mL}}$$
D
$$\frac{\mathrm{m} \omega^2}{\mathrm{~L}}$$
2
MHT CET 2023 13th May Evening Shift
MCQ (Single Correct Answer)
+1
-0

A stone is projected at angle $$\theta$$ with velocity $$u$$. If it executes nearly a circular motion at its maximum point for short time, then the radius of the circular path will be ( $$g=$$ acceleration due to gravity)

A
$$\frac{u^2}{g}$$
B
$$\frac{u^2 \cos ^2 \theta}{g}$$
C
$$\frac{u^2 \sin ^2 \theta}{g}$$
D
$$\frac{u^2 \cos ^2 \theta}{2 g}$$
3
MHT CET 2023 12th May Evening Shift
MCQ (Single Correct Answer)
+1
-0

A particle is moving in a circle with uniform speed '$$v$$'. In moving from a point to another diametrically opposite point

A
the momentum changes by $$\mathrm{mv}$$
B
the momentum changes by $$2 \mathrm{~mv}$$
C
the kinetic energy changes by $$\frac{1}{2} \mathrm{mv}^2$$
D
the kinetic energy changes by $$\mathrm{m v^2}$$
4
MHT CET 2023 12th May Evening Shift
MCQ (Single Correct Answer)
+1
-0

A body of mass '$$\mathrm{m}$$' attached at the end of a string is just completing the loop in a vertical circle. The apparent weight of the body at the lowest point in its path is ( $$\mathrm{g}$$ = gravitational acceleration)

A
zero
B
$$\mathrm{mg}$$
C
$$3 \mathrm{~mg}$$
D
$$6 \mathrm{~mg}$$
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