1
MHT CET 2022 11th August Evening Shift
+1
-0

A bucket containing water is revolved in a vertical circle of radius $$r$$. To prevent the water from falling down, the minimum frequency of revolution required is

($$\mathrm{g}=$$ acceleration due to gravity)

A
$$2 \pi \sqrt{\frac{\mathrm{r}}{\mathrm{g}}}$$
B
$$\frac{1}{2 \pi} \sqrt{\frac{\mathrm{r}}{\mathrm{g}}}$$
C
$$\frac{1}{2 \pi} \sqrt{\frac{\mathrm{g}}{\mathrm{r}}}$$
D
$$2 \pi \sqrt{\frac{\mathrm{g}}{\mathrm{r}}}$$
2
MHT CET 2022 11th August Evening Shift
+1
-0

A body moving in a circular path with a constant speed has constant

A
momentum
B
velocity
C
acceleration
D
kinetic energy
3
MHT CET 2022 11th August Evening Shift
+1
-0

Two bodies of masses '$$\mathrm{m}$$' and '$$3 \mathrm{~m}$$' are rotating in horizontal speed of the body of mass '$$m$$' is $$n$$ times that of the value of heavier body; while the centripetal force is same for both. The value of $$n$$ is

A
3
B
1
C
9
D
6
4
MHT CET 2021 24th September Evening Shift
+1
-0

A particle is moving along the circular path with constant speed and centripetal acceleration 'a'. If the speed is doubled, the ratio of its acceleration after and before the change is

A
$$3: 1$$
B
$$1: 4$$
C
$$2: 1$$
D
$$4: 1$$
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