8) A 50 kg box is pulled 11.0 m along a level surface by a rope. If the rope makes an angel of 35' with
the ground, and the force exerted through the rope is 90.0 N, how much work is done on the
box?



Answer :

To calculate the work done on the box, we can use the formula: Work = Force * Distance * cos(θ) 1. Given values: - Force (F) = 90.0 N - Distance (d) = 11.0 m - Angle (θ) = 35 degrees 2. Convert the angle from degrees to radians since trigonometric functions in the formula require radians: - 35 degrees * (π/180) = 0.6109 radians 3. Calculate the cosine of the angle: - cos(0.6109) ≈ 0.825 4. Substitute the values into the formula: - Work = 90.0 N * 11.0 m * 0.825 ≈ 808.5 Joules Therefore, the work done on the box when it is pulled 11.0 m along a level surface by a rope making an angle of 35 degrees with the ground and exerting a force of 90.0 N is approximately 808.5 Joules.