A mobile at the art museum has a 2.0 steel cat and a 4.0 steel dog suspended from a lightweight cable, as shown in the figure . It is found that = 27 when the center rope is adjusted to be perfectly horizontal. What is the tension in the rope 3? What is the angle of rope 3?

How to caculate energy ef ficiency?

assuming length of day uniformly increases by 0.0001 seconds per century.calculate the cumulative effect on the measure of time over 20 centuries

66 kg diver steps off a 13 m tower and drops from rest straight down into the water. If he comes to rest 4.8 m beneath the surface, determine the average resistance force exerted on him by the water

You are lowering two boxes, one on top of the other, down the ramp shown in the figure by pulling on a rope parallel to the surface of the ramp. Both boxes move together at a constant speed of 20.0 {\rm cm/s}. The coefficient of kinetic friction between the ramp and the lower box is 0.448, and...

A rifle with a barrel length of 61 fires a 11 bullet with a horizontal speed of 390 . The bullet strikes a block of wood and penetrates to a depth of 15 .

Children in a tree house lift a small dog in a basket 5.00 up to their house. If it takes 211 of work to do this, what is the combined mass of the dog and basket?

A novice skier, starting from rest, slides down a frictionless 34.0 incline whose vertical height is 190 .

"A steel washer is suspended inside an empty shipping crate from a light string attached to the top of the crate. The crate slides down a long ramp that is inclined at an angle of 31 above the horizontal. The crate has mass 250 . You are sitting inside the crate (with a flashlight); your...

High-heeled shoes can cause tremendous pressure to be applied to the floor. Suppose the radius of a heel is 3.00 10-3 m. At times during a normal walking motion, nearly the entire body weight acts perpendicular to the surface of such a heel. Find the pressure that is applied to the floor under...