Question

A man lifts a mass of 30 kg on moon to a height of 5 m. Assuming that force of gravity on moon is 1 kg mass is 30 N. Find the work done by the man With step by step

Answer 1

Solution:

Here , given that for 1kg mass 30N of gravitational for will act . But here the is 30kg mass . Now , for 30 kg mass = 30 × 30N = 900N gravitational force will act

Now, finding work done by man

Work = F × S

→ Work = 900N × 5m

→ Work = 4500 J or Nm or kgm²/s²

Hence , work done the man on moon = 4500J

★ Knowledge enhancer :

More formulas

• F = ma
• W = FS
• a = ∆v/t
• K.E = 1/2 mv²
• p = mv
• R = ρI/A