A sliding door is closed by pulling a cord with a constant force of 37 pounds at a constant angle of 16°. The door is moved 1.5 feet to close it. How much work is done? Round to one decimal place.
A) 53.4 ft lbs.
B) 15.3 ft lbs.
C) 15.9 ft lbs.
D) 25.7 ft lbs.

Question

Quizplus · Accepted Answer

Work = Force x Distance x Cosine of the angle= 37 x 1.5 x Cos 16°= 53.4 ft lbs (rounded to one decimal place)

A Sliding Door Is Closed by Pulling a Cord with a Constant