Question

Supposed a body of mass 1kg is lifted through a hight of 1meter how much work is done

Answer 1

Mass of the body (m) = 1 kg

Height (H) = 1 m

Acceleration due to gravity (g) = 10 m/s²

⧪ Work Done : It is given by potential energy ( Here )

⧪ Potential Energy : It is defined as product of mass and height and acceleration due to gravity

➠ W = P.E

➠ W = mgH

➠ W = (1)(10)(1)

➠ W = 10 J $\pink{\bigstar}$

More Info :

Kinetic Energy :

It is defined as half of product of mass and square of change in velocity .

$\sf \bigstar\ \; K.E=\dfrac{1}{2}mv^2$

Answer 2

Answer:

Work done = 10J

Explanation:

Given that,

• Mass (m) = 1 kg
• Height (h) = 1 m
• Acceleration due to gravity (g) = 10 m/s²

As we know that,

$\green \bigstar{ \boxed{ \red{ \sf{Work \: done = Force × Displacement}}}}$

So,

$\hookrightarrow \sf \: w = F \: \times \: s\\ \\ \hookrightarrow \sf \: w = mg \times h \\ \\ \hookrightarrow \sf \: w = 1 \times 10 \times 1 \\ \\\hookrightarrow \sf \: { \underbrace{w= 10joule}} \: \: \red \bigstar$

Note,

$\bull \sf \: F = mg \\ \\ \bull \sf \: Displacement = height$