Physics

Content Covered: - Newton's Laws

Directions: Answer the following problems below by showing the complete solution. In return, I will give you a good rating. Thank you so much!

Note: Please be careful with the calculations in the problem. Kindly double check the units, significant digits, and the solution and answer if there is a deficiency.

Thank you so much!

1.

3.7 Gone Fishing 7a You are on a fishing trip, not catching anything, and bored - time for physics! You drop your 50 g weight to the bottom of the lake under constant tension from the string of magnitude 0.1 N. The damping constant for your falling weight is 2.5 kg/s. What is the terminal velocity of the weight? Give your answer in m/s and assume the positive direction is upwards. Enter answer here 7b If it takes 500's for the weight to reach the bottom of the lake, how deep is the lake? Give your answer in m. Enter answer here3.10 Bosun's Chair 10a You are sitting in a bosun's chair which is connected to a massless rope that runs over a massless frictionless pulley. You are holding the other end of the rope as seen in the figure below. The total mass of you and the bosun chair is 82 kg. With what force must you pull on the rope to make the bosun's chair rise at a constant velocity? Please give your answer in N. Enter answer here 10b With what force must you pull on the rope to make the bosun's chair rise at an acceleration of 0.65 m/s-? Please give your answer in N. Enter answer here3.6 Airplane 6a A plane of mass 150000 kg is flying through the air at a constant altitude at a speed of 250 m/s. The plane has a wingspan of 60 m. What lift force must the wings provide? Please provide your answer in N. Enter answer here 6b Assuming the air density is 0.0040 kg/m and the drag coefficient is 0.47, what thrust force must the engines provide? You may approximate the plane as a sphere of diameter 60 m Enter answer here3.8 Agent Smith 8a Agent Smith, who has a mass of 70 kg, is trapped in the back of a closed truck going down the road at 35 m /s The driver applies the breaks and slows down to 20 m / s in 1.8 s. What ficticious force does Agent Smith feel? Please give your answer in N. Magnitude only. Enter answer here 8b What is the reaction force to the fictitious force? the force of the floor acting upwards on Agent Smith's shoes C the force due to gravity the force of the air acting on Agent Smith the effective force of the engine and tires there is no reaction force since this an accelerating frame3.9 Conical Pendulum 9a A conical pendulum is made by hanging a mass of 5.0 kg from a large spring of length 1.0 m and spring constant = 100 N/m. The spring moves in a circle at an angle of 25 deg. When at rest hanging straight downwards (i.e. at an angle of 0 deg), how much does the spring stretch due to the weight? Please give your answer in m. Enter answer here 9b How much does the spring stretch due to conical motion? Please give your answer in m. Enter answer here 9c What is the speed of the pendulum as it moves in conical motion? Please give your answer in m / s. Enter answer here