How much force F should be applied at point D in the diagram to the left to produce rotational equilibrium in the diagram to the left where F1 = 14.0 N, F2 = 24.0 N, R1 = 40.0 cm, R2 = 18.0 cm and R3 = 34.0 cm?
A board, which is 7.0 feet long and weighs 24 pounds, is sitting on the floor. Sitting on this board are two crates. The first crate weighs 115 pounds and is sitting 2.5 feet from the left end of the board while the second crate weighs 55 pounds and is sitting 1.5 feet from the right end of the board. How much upward force F would you have to apply to the right end of the board to lift that end of the board off the floor? (you can leave measurements in ft and lbs)
A sign hangs in front of a store as shown to the right. The sign consists of a bracket, which has a mass of 6.20 kg and a length of 1.40 m, attached to the building, and supported by a cable attached to the end of the bracket at an angle of α= 28.0°. The sign, which has a mass of 14.2 kg, is hanging from the end of the bracket as shown.
a) What will be the magnitude of the torque exerted by the sign and bracket about the indicated center of rotation?
b) What is the tension T in the cable?