Example 18 isn't first part wrong calculated how did they took cos@=0 in first part when @=37° given ?

# Doubt from work,power and energy

**Priya_1**#2

No, the answer is correct because the angle in Fscos@ is the angle between force applied and the displacement occured.

And here both are parallel to the inclined plane hence the angle between them is 0 that's why cos@ is taken as 1 here.

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