Question

In a pack of 55 pens the number of black pens are ⅜ of blue pens the number of black pens are

Answer 1

Answer:

let no. of blue pen be x

hence no. of black pen=3/8x

3/8x+x=55

x=40

hence no. of black pen = 15

Answer 2

Step-by-step explanation:

Work is said to be done when a force applied on the body displaces the body through a certain distance in the direction of force. By resolving force →F into two components : (i) F cosθ in the direction of displacement of the body. (ii) F sinθ in the perpendicular direction of displacement of the body.