Question

Under what conditions a body on an inclined plane has acceleration of 4.9m/s2

Answer 1

Answer:

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Explanation:

Thus the acceleration of the body on a smooth inclined plane surface will be 4.9 m/s² if the angle of inclination is 30°.

Answer 2

Given:

The acceleration of a body = 4.9 m/s²

To find:

Under what conditions a body on an inclined plane has acceleration of 4.9m/s².

Solution:

We know that the acceleration acting on a body placed on an inclined plane of angle α is g×sinα. Hence if the acceleration of the body on an inclined plane is given as 4.9m/s², then

4.9m/s²= g×sinα

Here g is the acceleration due to gravity.

4.9m/s²= 9.8× sinα

sinα = 4.9/9.8

sinα = 0.5

α = sin⁻¹(0.5)

α = 30°

Thus a body on an inclined plane will have an acceleration of 4.9m/s² when the angle that the inclined plane makes with the horizontal surface will be 30°.