science

Grade6

Easy

Question

Find the mass of the body if it has a potential energy of 1 J and a height 0.5 m.

1 kg
0.2 kg
0.5 kg
0.3 kg

hint Hint:

Potential energy= mass x gravitational acceleration x height.

The correct answer is: 0.2 kg

Given,
Potential energy of the object = 1 J
Height of the object is falling = 0.5 m
According to the formula,
Potential energy= mass x gravitational acceleration x height.
mass = $fraction numerator p o t e n t i a l space e n e r g y over denominator g r a v i t a t i o n a l space a c c e l e r a t i o n space cross times space h e i g h t end fraction$ ( gravitational acceleration = 9.8m/s²)
mass = $fraction numerator 1 over denominator 9.8 space cross times space 0.5 end fraction$
mass = 0.2 kg

Find the potential energy if the body has a mass of 2 kg and is falling from 10 m.

scienceGrade6

Grade6

science

Find the potential energy of the body if the mass of the object is 1 kg and is falling from a height 1 m.

scienceGrade6

Grade6

science

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Find the mass of the body if it has a potential energy of 1 J and a height 0.5 m.

1 kg0.2 kg0.5 kg0.3 kg

Potential energy= mass x gravitational acceleration x height.

The correct answer is: 0.2 kg

Given, Potential energy of the object = 1 JHeight of the object is falling = 0.5 m According to the formula, Potential energy= mass x gravitational acceleration x height.mass = ( gravitational acceleration = 9.8m/s2)mass = mass = 0.2 kg

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1 kg
0.2 kg
0.5 kg
0.3 kg