Question

an object with 100 N weight is raised to a height of 15 m. find the potential energy possessed by the object at that height.
also find the new potential height.(a) if the same object is raised half of its original height .
(b) if the same object is raised to three times of its original height.

Answer 1

PE is mgh= 100×15=1500

As given mg is 100N (weight)

a)it becomes half 750

b)it becomes 3 times 1500 ×3=4500

Answer 2

The potential energy is 1500 J.

(a). The potential energy is 750 J.

(b). The potential energy is 4500 J.

Explanation:

Given that,

Weight of object = 100 N

Height = 15 m

We need to calculate the potential energy

Using formula of potential energy

$P.E=mgh$

Put the value into the formula

$P.E=100\times15$

$P.E=1500\ J$

(a). If the same object is raised half of its original height

$h'=\dfrac{h}{2}$

$h'=\dfrac{15}{2}$

$h'=7.5\ m$

We need to calculate the potential energy

Using formula of potential energy

$P.E=mgh'$

Put the value into the formula

$P.E=100\times7.5$

$P.E=750\ J$

(b). if the same object is raised to three times of its original height

$h'=3\times h$

$h'=3\times15$

$h'=45\ m$

We need to calculate the potential energy

Using formula of potential energy

$P.E=mgh'$

Put the value into the formula

$P.E=100\times45$

$P.E=4500\ J$

Hence, The potential energy is 1500 J.

(a). The potential energy is 750 J.

(b). The potential energy is 4500 J.

Learn more :

Topic : Potential energy

https://brainly.in/question/14140493