A 1 kg mass is lifted vertically 10 m. How much work is done against gravity? (g
Practice Questions
Q1
A 1 kg mass is lifted vertically 10 m. How much work is done against gravity? (g = 9.8 m/s²)
9.8 J
19.6 J
29.4 J
39.2 J
Questions & Step-by-Step Solutions
A 1 kg mass is lifted vertically 10 m. How much work is done against gravity? (g = 9.8 m/s²)
Step 1: Identify the mass being lifted, which is 1 kg.
Step 2: Identify the height the mass is lifted to, which is 10 m.
Step 3: Identify the acceleration due to gravity, which is 9.8 m/s².
Step 4: Use the formula for work done against gravity: Work = mass × gravity × height.
Step 5: Substitute the values into the formula: Work = 1 kg × 9.8 m/s² × 10 m.
Step 6: Calculate the result: 1 × 9.8 × 10 = 98 J.
Work Done Against Gravity – The work done against gravity is calculated using the formula W = mgh, where W is work, m is mass, g is acceleration due to gravity, and h is height.
