Question

a force 10 neuton is applied on the body and the body is displaced by 10m the angle between force and displacement is 45°. calculate the work ​

Answer 1

Given:-

→ Magnitude of force = 10 N

→ Displacement of the body = 10 m

→ Angle of displacement = 45°

To find:-

→ Work done by the body.

Solution:-

We know that :-

W = F × s × cos θ

Where :-

• W is the work done.

• F is the force.

• s is displacement of the body.

• θ is the angle of displacement.

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Now, value of cos θ at 45° is 1/√2 or 0.707.

So substituting values in the above formula, we get :-

⇒ W = 10 × 10 × 0.707

⇒ W = 100 × 0.707

⇒ W = 70.7 J

Thus, work done by the body is 70.7 J .

Answer 2

Answer:

60°

W = FSCOSθ

= 10×10 cosθ

COSθ= 1/2

θ = 60°