An apple on a tree has a gravitational potential energy of 185 J and mass of
200g. How high from the ground is the apple? (Take g= 10m/s2 ).
Answers
Given :
Potential energy = 185J
Mass of apple = 200g = 0.2kg
Acc. due to gravity = 10m/s²
To Find :
Height of apple from the ground.
Solution :
★ Potential energy is the energy which is possessed by a body by virtue of its position.
- It is a scalar quantity having only magnitude.
- It is measured with respect to reference point
- At reference point, it is taken zero.
- SI unit : J
Potential energy of body of mass at a height of h is given by
- U = m × g × H
By substituting the given values;
➠ U = m × g × H
➠ 185 = 0.2 × 10 × H
➠ 185 = 2H
➠ H = 185/2
➠ H = 92.5 m
Given :
Potential energy = 185J
Mass of apple = 200g = 0.2kg
Acc. due to gravity = 10m/s²
To Find :
Height of apple from the ground.
Solution :
★ Potential energy is the energy which is possessed by a body by virtue of its position.
It is a scalar quantity having only magnitude.
It is measured with respect to reference point..
At reference point, it is taken zero.
SI unit : J
Potential energy of body of mass at a height of h is given by
U = m × g × H
By substituting the given values;
➠ U = m × g × H
➠ 185 = 0.2 × 10 × H
➠ 185 = 2H
➠ H = 185/2
➠ H = 92.5 m