Question

A force of 64 dyne acts on a body inclined to the horizontal at an angle of ${60}^o$. Find the acceleration in the body if its mass is 8 g and it can only move in the horizontal direction.

• A. $16cm{s}^{-2}$
• B. $8cm{s}^{-2}$
• C. $4cm{s}^{-2}$
• D. $32cm{s}^{-2}$

Answer 1

The correct option is C $4cm{s}^{-2}$

Force=64dyne

$F_{net}$ in x direction is

$=Fcos60$

$Fcos60=ma$

$64\ast \frac{1}{2}=8\ast a$

$a=4cm/s^2$