Question

answer it........ ..​

Answer 1

Answer:-

• (2) +196 J is the required answer.

Explanation:

Given:-

• Height ,h = 2m
• Mass ,m = 10 kg
• Acceleration due to gravity ,g = 9.8m/s²

To Find:-

• Work done ,W

Solution:-

• As we have to calculate the Work done by persons in against gravity.

• As we know that Work Done is calculated by the Product of Force (mg) & displacemet . Here, the person lift the bucket from well . so , the work done by him .

• W = mgh

where,

• W denote Work Done
• m denote mass
• g denote acceleration due to gravity
• h denote height
• Substitute the value we get

• → W = 10×9.8×2

• → W = 98×2

• → W = 196 J

• Hence, the work done by the person is 196 Joules.

Options (2) 196 Joules is the required Answer.

Answer 2

Work done = Mass × Accl. due to gravity × height

= 10 × 9.8 × 2

= 196 J