Question

A body of mass 5kg moved through a distance of 100 cm with uniform speed. calculate the work done.( take meu as 0.1 and g as 10m/s^2)​

Answer 1

Given:-

• Mass of body ,m = 5 kg

• Displacement ,s = 100cm = 100/100 = 1 m

• Acceleration due to gravity ,g = 10m/s²

To Find:-

• Work Done ,W

Solution:-

Firstly we calculate the force acting on the body .

As we know that Force is the product of mass and acceleration.

• F = mg

Where,

F is the Force

m is the mass

g is the acceleration due to gravity

Substitute the value we get

→ F = 5 × 10

→ F = 50N

Force acting on the body is 50 Newton.

Now, calculating the Work Done

• W = Fs

where,

W is the Work Done

F is the Force

s is the displacement

→ W = 50×1

→ W = 50 J

Therefore, the work done by the body is 50 Joules .

Answer 2

W = mgh

=> W = 5 × 100/100 × 10

=> W = 5 × 1 × 10

=> W = 5 × 10

=> W = 50 J

Work Done is 50 Joules