Question

A body of mass 10 kg starts from rest and rolls down an inclined plane.It rolls down 10m in 2s? a) What is the acceleration attained by the body. b)What is the velocity of the body at 2s? c) What is the force acting on the body?

Answer 1

I have solved the problem for you in this three different pictures. I wish it helps you.

Answer 2

The acceleration of the body is 5 m/s², velocity after 2 sec is 10 m/s, and the force acting on the body is 50 N.

Given,

A body of mass of 10 kg starts from rest and rolls down an inclined plane. It rolls down 10m in 2s.

To Find,

The acceleration, velocity after 2 sec, and the force acting on the body.

Solution,

Using the equation of motion

S = ut + 1/2at²

Now, it is given that S = 10, t = 2, and u = 0

So,

10 = 0(2) + 1/2(a)(2)²

10 = 2a

a = 5 m/s²

Now,

v = u + at

v = (0)+5(2)

v = 10 m/s

Force = mass*acceleration

Force = 10(5) = 50 N

Hence, the acceleration of the body is 5 m/s², velocity after 2 sec is 10 m/s, and the force acting on the body is 50 N.

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