Question

On displacing a body by 5 m by force of 50 n wori done is 125 j find the angle. ​

Answer 1

Given :

Work done = 125 J

Force required = 50 N

Displacement = 5 m.

To find :

Angle between force and displacement = ?

we know that,

$w \: = \: f \: × d \: × \: cos \: (\alpha)$

$w=f×d×cos(α)$

$125 \: = \: 50 \: × \: 5 \: × \: cos (\alpha)$

$125=50×5 ×cos(α)$

Here $\alpha$ is an angle.

$125 \: = \: 250 \: × cos \(\alpha)$

$125=250×cos(\alpha)$

$Cos (\alpha) \: = \: \frac {125}{250}$

$Cos (\alpha) \: = \frac {1}{2}$

→ $\apha = 60°$

•°• The angle between force and displacement is 60°.

Answer 2

Answer:

In displacing a body 5 m by a force of 50 N the work done is 125 J. Find out the angle between the directions of force and displacement. Ans. 60°.

Explanation:

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