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An object of mass 40 kg (g = 10 ms-2) is raised to a height of 8 m above the ground. The gain potential
energy by the object:
- a)200J
- b)3200J
- c)1500J
- d)1000J.
Correct answer is option 'B'. Can you explain this answer?
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Most Upvoted Answer
An object of mass 40 kg (g = 10 ms-2) is raised to a height of 8 m abo...
Explanation:
Potential energy is the energy an object possesses by virtue of its position or state. The potential energy of an object of mass m raised to a height h above the ground is given by the formula:
Potential Energy (PE) = mgh
where m is the mass of the object in kg, g is the acceleration due to gravity in m/s² and h is the height in meters.
Given, mass of the object (m) = 40 kg, height (h) = 8 m and acceleration due to gravity (g) = 10 m/s²
Substituting the values in the formula, we get:
PE = mgh
= 40 kg x 10 m/s² x 8 m
= 3200 J
Therefore, the gain in potential energy by the object is 3200 J, which is option (B).
Potential energy is the energy an object possesses by virtue of its position or state. The potential energy of an object of mass m raised to a height h above the ground is given by the formula:
Potential Energy (PE) = mgh
where m is the mass of the object in kg, g is the acceleration due to gravity in m/s² and h is the height in meters.
Given, mass of the object (m) = 40 kg, height (h) = 8 m and acceleration due to gravity (g) = 10 m/s²
Substituting the values in the formula, we get:
PE = mgh
= 40 kg x 10 m/s² x 8 m
= 3200 J
Therefore, the gain in potential energy by the object is 3200 J, which is option (B).
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Community Answer
An object of mass 40 kg (g = 10 ms-2) is raised to a height of 8 m abo...
Since potential energy is mgh. so
40kg × 10m/s2 × 8m=3200J
40kg × 10m/s2 × 8m=3200J
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An object of mass 40 kg (g = 10 ms-2) is raised to a height of 8 m above the ground. The gain potentialenergy by the object:a)200Jb)3200Jc)1500Jd)1000J.Correct answer is option 'B'. Can you explain this answer?
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