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Potential Energy

Potential ene...

Question

Potential energy of your body is minimum, when___

A

you are standing.

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B

you are sitting on a chair.

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C

you are sitting on the ground.

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D

you lie down on the ground.

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Solution

The correct option is D you lie down on the ground.
Potential energy is given by mgh (where m is the mass of the object, g is the accelaration due to gravity and g is the height of the object) and therefore it will be least when distance of the body from the ground is zero.

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Similar questions

Rewrite the following sentences using proper alternative.

a. The potential energy of your body is least when you are .....

(i) sitting on a chair
(ii) sitting on the ground
(iii) sleeping on the ground
(iv) standing on the ground

b. The total energy of an object falling freely towards the ground ...

(i) decreases
(ii) remains unchanged

(iii) increases
(iv) increases in the beginning and then decreases

c. If we increase the velocity of a car moving on a flat surface to four times its original speed, its potential energy ....

(i) will be twice its original energy

(ii) will not change
(iii) will be 4 times its original energy
(iv) will be 16 times its original energy.

d. The work done on an object does not depend on ....

(i) displacement
(ii) applied force
(iii) initial velocity of the object
(iv) the angle between force and displacement.

Q. A child is sitting on a swing. Its minimum and maximum heights from the ground are

0.75 m

2 m

respectively, its maximum speed will be :

Q. If you are sitting on a chair and swinging your legs, which joints are you moving?

Q. A child is sitting on a swing whose minimum and maximum heights from the ground are

0.75 m

2 m

respectively. Its maximum speed will be

Q. Read the information given below:
Ten friends

A

B

C

D

E

F

G

H

I

J

are sitting on the opposite sides of a rectangular table.

J

F

are sitting next to each other.

B

is sitting at middle position on one of the sides and

C

is sitting as far from

B

B

is sitting from

A

A, B

C

are sitting on the same side of the table.

G

I

are sitting opposite to each other.

D

is on one of the ends.

E

has an equal number of persons sitting on his either side.

I

is sitting to the immediate right of

D

. In between of which two persons

I

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