Question

A block of mass 9 Kg rests on a plane making an angle of 160 with horizontal. Determine the component of the weight normal to the plane. ​

Answer 1

Given:

mass of block = 9kg

angle making with horizontal = 160°

To Find:

component of the weight normal to the plane. ​

Solution:

From the given information, we can draw the Free body diagram of the block,

the Free body diagram of the block is shown below,

from the given figure, we infer that,

the component of weight normal to the plane is 9g cos 160°

= 9 × 10 × cos 160

= 87.3 N

thus, the component of weight normal to the plane is 87.3 N