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Problem: A house painter uses the chair and pulley arrangement of the figure to lift himself up the side of the house. The painters mass is 65kg and the chairs mass is 9.0kg.
Part A: With what force must he pull down on the rope in order to accelerate upward at 0.25 m/s2?
I need help to find with what force he must pull down on the rope.
A helicopter rises vertically, carrying a load of concrete to make the foundation for a ski lift. Find what is the helicopter acceleration
An 106 millimeter focal length lens is used to focus an image on the sensor of a camera. Find the closest object this lens could photograph sharply
Through what maximum angle θmax will the reference line turn in the positive direction? What are (b) first and (c) second times the reference line will be at θ = θmax/3? At what (d) negative time and (e) positive time will the reference line be at..
Calculate the deflection that a penny, dropped from the Empirestate building, would experience due to the coriolis force. You may ignore air drag in your calculation.
An AC generator supplies 15 amps at 440V to a 50,000V power line through a step-up transformer. how much money would the energy supplier save per month if electricity costs $0.12/kWh by stepping up the voltage
a river of width 34 m flows in a straight line the x direction with a speed of 0.24 ms. a boat is rowed such that it
A 15 centimeter ruler is placed 30 centimeter in front of a concave mirror with a focal length of 20 centimeter. Find where is the image located and how big is it
A horizontal circular platform rotates counterclockwise about its axis at the rate of 0.979 rad/s. You, with a mass of 70.3 kg, walk clockwise around the platform along its edge at the speed of 1.11 m/s with respect to the platform. Calculate the ..
Find the maximum height reached by the 2.70 {rm kg} object. In addition, the snow exerts a retarding force on the sled that points opposite to the direction of motion, and has a magnitude of 57.
A string wrapped around a peg (diameter=2.00 cm) along the axis of a top is pulled with a constant tension of 5.92 N. what is the moment of inertia of the top
A closed system of mass 10 kg undergoes a process during which there is energy transfer by work from the system of 0.147 kj/kg, an elevation decrease of 50 m, Determine the heat transfer for the process in kJ
an infinitely long line of charge has a linear charge density of 6.50 times 10-12 . a proton is at distance 14.0 from
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