A boy of mass 40 kg is on a waterslide which slopes at 30° to the horizontal. The frictional force up the slope is 120 N. Calculate the boy’s acceleration down the slope? Take the acceleration of free fall g to be 9.81 m s−2
1 Answer
Jan 13, 2018
1.90
Explanation:
so,from the above diagram, component of the boy's weight acting downwards along the plane is
Now, frictional force acting above along the plane is 120 N
So, net force acting downwards is (196.2-120) N 0r,76.2 N
hene, acceleration of the boy will be (net force / mass)
i.e 1.90