A small block is released from rest on a smooth plane whose angle of inclination with…

PHYSICS · Single correct · CBSE · Physics · Laws of Motion · Laws of Motion

Problem

A small block is released from rest on a smooth plane whose angle of inclination

\theta

with the horizontal can be varied continuously from

0^{\circ}

90^{\circ}

. Which statement correctly describes how the acceleration

a

of the block and the normal reaction

R

acting on it change as

\theta

increases? (a) Both

a

and

R

increase (b)

a

decreases while

R

increases (c)

a

increases while

R

decreases (d)

a

remains constant while

R

decreases