Question

A cement bag of weight 50kg has potential energy of 490 J. To what height is
it raised ?
a)5m
b)im c)15m
d)20m
​

Answer 1

Answer:

P.E = mgh

given : height=?

mass = 50kg

energy = 490 joules( J )

g=9.8m/s

Find=height.

Applying P.E formula

P.E =mgh

490=50×9.8×h

490=490×h

h=490/490

h= 1

height =1 m .

Answer 2

Answer:

the cement bag is raised to a height of approximately 1 meter. Thus, the correct option is (b) 1m.

Explanation:

The potential energy (PE) of an object raised to a certain height can be calculated using the formula:

PE = mgh

Where m is the mass of the object, g is the acceleration due to gravity, and h is the height to which the object is raised.

In this case, the mass of the cement bag is 50 kg, and the potential energy is 490 J. We can rearrange the formula and solve for h as follows:

h = PE / (mg)

where g is the acceleration due to gravity which is approximately 9.8 m/s^2.

h = 490 J / (50 kg x 9.8 m/s^2)

h = 1 m (approximately)

Therefore, the cement bag is raised to a height of approximately 1 meter. Thus, the correct option is (b) 1m.

• Potential energy is the energy possessed by an object due to its position or configuration. It is stored energy that has the potential to be converted into kinetic energy, which is the energy of motion. The amount of potential energy an object has is dependent on its position relative to other objects or to a reference point, as well as its configuration or shape.

To learn more about gravity from the link below

https://brainly.in/question/47363266

To learn more about acceleration from the link below

https://brainly.in/question/789316

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