Question

Two boxes, one of mass 20 kg and the other of mass 40 kg are sliding down a frictionless inclined plane
that makes an angle of 30° with the horizontal. Their respective accelerations in m/s2 are
9.8; 9.8
4.9;9.8
9.8; 4.9
4.9: 4.9

Answer 1

Answer:

C)

Explanation:

The acceleration in bodies sliding on a frictionless inclined plane does not depend upon the mass of the body. It is given by gsinθ. Thus accelerationin both the bodies must be same. Now there are only two such options, (a) and (d). But acceleration of a body on an inclined plane cannot be equal to g. So the correct option has to be (d). It can also be calculated easily by the formula .

gsinθ=9.8×

2

1

=4.9

Answer 2

Answer:

9.8;4.9 is your answer

Explanation:

hope it's help you