Question

to lift a body through 10 m upwards, energy of 5800 J is
required. The mass of the body is (g=10ms-2)?​

Answer 1

Given :-

• Potential Energy , PE = 5800 J

• Height, h = 10 m

• Acceleration due to gravity, g = 10 m/s²

To Find :-

• Mass of the body

Solution :-

We know,

$\bold{Potential\:Energy_{(E_p)}=\:mgh}$

Where,

g = Acceleration due to gravity

m = Mass of the body

h = Height

Now, put the given values in the formula

⟼ 5800 = m × 10 × 10

⟼ 5800 = 100 m

⟼ m = 58 kg

Hence, mass of the body is = 58 kg

Extra Information :-

★ Potential Energy :-

When a body is lifted certain amount of work is done and when the work is done in lifting a body the energy we are dealing here will be potential energy.

S.I unit of P.E :- J ( Joule)

Common symbols :- P.E , V or, U

Answer 2

Answer:

Given :-

• Potential Energy , PE = 5800 J

• Height, h = 10 m

• Acceleration due to gravity, g = 10 m/s²

To Find :-

• Mass of the body

Solution :-

We know,

\bold{Potential\:Energy_{(E_p)}=\:mgh}PotentialEnergy

(E

p

)

=mgh

Where,

g = Acceleration due to gravity

m = Mass of the body

h = Height

Now, put the given values in the formula

⟼ 5800 = m × 10 × 10

⟼ 5800 = 100 m

⟼ m = 58 kg

Hence, mass of the body is = 58 kg