Both kinetic energy and potential energy

MEDIUM

Earn 100

A body of mass ' $m$ ' is raised to a vertical height ' $h$ ' through two different paths $a$ and $b$ . What will be the potential energy of the body in the two cases? Give a reason for your answer.

Important Questions on Energy

MEDIUM

A force acting on a

20 kg

mass changes its velocity from

6 m / s

3 m / s

. The work done by the force is :

MEDIUM

Science>Physics>Energy>Potential Energy

9800 J

of energy was spent to raise a mass of

70 kg

. The mass was raised to a height of _____?

EASY

Science>Physics>Energy>Potential Energy

The temperature of the water at the bottom of a water fall is higher than that of the water at the top, because :

EASY

Science>Physics>Energy>Potential Energy

1 kWh

equal to

HARD

Science>Physics>Energy>Potential Energy

A block of

9 kg

is moving with a velocity of

4 m / s

on a frictionless surface. The block comes to rest by compressing the spring. If the spring constant is

4 x 10^{4} N / kg

, then find the compression in the spring.

EASY

Science>Physics>Energy>Potential Energy

Which of the following graphs best represent the graphical relationship between Kinetic Energy

(K . E)

and momentum

(P)

of a body in motion?

EASY

Science>Physics>Energy>Potential Energy

An object of mass

15 kg

is moving with uniform velocity of

4 m / s

. What is the kinetic energy possessed by the object?

EASY

Science>Physics>Energy>Potential Energy

Which of the following graphs shows correct relation of kinetic energy (E), potential Energy (U) and height (h) from the ground of a particle?

EASY

Science>Physics>Energy>Potential Energy

A rod of length

l

and mass

m

fixed at one end, is hanging vertically. The other end is now raised so that the rod makes an angle

30 °

with horizontal line. The work done in the process will be :

EASY

Science>Physics>Energy>Potential Energy

Flying birds has

EASY

Science>Physics>Energy>Potential Energy

The danger signals installed at the top of tall buildings are red. These can be easily seen from a distance because among all other colours, the red light

HARD

Science>Physics>Energy>Potential Energy

A spring of spring constant $K = 4 x 10^{3} N / m$ is compressed by $2 cm$ , then determine the potential energy stored in spring.

EASY

Science>Physics>Energy>Potential Energy

The work done to increase the velocity of a car from

30 km h^{- 1}

60 km h^{- 1}

, if the mass of the car is

1500 kg

, is:

EASY

Science>Physics>Energy>Potential Energy

In a simple Pendulum the displacement is equal to amplitude. Then kinetic energy will be

EASY

Science>Physics>Energy>Potential Energy

How fast should a man weighing

600 N

run to achieve a kinetic energy of

750 J

. Take

g = 10 m s^{- 2}

MEDIUM

Science>Physics>Energy>Potential Energy

The energy produced by converting one microgram of matter completely into energy will be

MEDIUM

Science>Physics>Energy>Potential Energy

Ratio of potential energies of body A and body B will be

Question Image

EASY

Science>Physics>Energy>Potential Energy

Write in your words the definition of potential energy.

MEDIUM

Science>Physics>Energy>Potential Energy

Two bodies A and B have masses in the ratio

5 : 1

and their kinetic energies are in the ratio

125 : 9

. Find the ratio of their velocities.

EASY

Science>Physics>Energy>Potential Energy

Light is a form of energy. Cite an example.

A body of mass 'm' is raised to a vertical height 'h' through two different paths a and b. What will be the potential energy of the body in the two cases? Give a reason for your answer.

Important Questions on Energy

Learn and Prepare for any exam you want !

A body of mass ' $m$ ' is raised to a vertical height ' $h$ ' through two different paths $a$ and $b$ . What will be the potential energy of the body in the two cases? Give a reason for your answer.