Question

find workdone at an inclined angle i.e (theta is equal to 0 , 90 , 180 degree)

Answer 1

If theta = 0° then the work done will be positive.
If theta = 90° then the work done will be zero.
If theta = 180° then the work done will be negative...

Answer 2

The work is done at an inclined angle i.e (theta is equal to 0, 90, and 180 degrees is positive, zero and negative respectively.

Given:

Three angles 0, 90, and 180 degrees.

To Find:

The work is done at an inclined angle i.e (theta is equal to 0, 90, and 180 degrees.

Solution:

To find work is done at an inclined angle i.e (theta is equal to 0, 90, and 180 degrees we will follow the following steps:

As we know,

Work done is the amount of energy used to displace an object at a distance of x and an angle theta with the force.

The formula of work done = Force. displacement

$= f.x = fx \: cosΘ$

Unit of work done

$= kgm {s}^{ - 2} \times m = kg {m}^{ - 2} {s}^{2}$

Now,

Putting values of theta in the above formula we get,

For Θ = 0°

$fx \: cosΘ = fx \: cos0 = + fx$

For Θ = 90°

$fx \: cos90 = 0$

For Θ = 180°

$fx \: cos180 = - fx$

As cos0°, cos 90° and cos 180° are +1, 0 and -1

Henceforth, the work is done at an inclined angle i.e (theta is equal to 0, 90, and 180 degrees is positive zero, and negative respectively.

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