An elevator cab that weighs 28.6 kN moves upward. What is the tension in the cable if the cab's speed is (a) increasing at a rate of 1.20 m/s? and (b) decreasing at a rate of 1.20 m/s²? (a) Number i 32.1 Units N (b) Number i 25.1 Units N

Force T pulls at angle a up from the horizontal on a section of pipe of weight W as shown, but the pipe remains motionless. The coefficient of static friction between pipe and floor is µ. We know that the magnitude of the total frictional force on the pipe by the floor is: 1(c T. A) 27 cos a B) µ(W +T sin a) C) µW +T cos a D) T cosa W A B

A 3 kg body is connected via an inextensible cable to a 1 kg body. A 30 N force at 37 degrees to the horizontal surface is applied at the free end of the 3 kg body and the two bodies begin moving under the effect of the applied force. Find the tension in the rope, in N. Use g =10m/s2, sin 37 = 0.6 and cos 37 = 0.8. Round the answer to the first decimal.

A 51.9 kg crate is hung from the ceiling by two wires. Each wire makes an angle of 41 degrees with the ceiling. What is the tension (in newtons) in one of the wires?