Share
Explore BrainMass

Newton's Laws

Car on a banked curve

Q: A car rounds a banked curve where the radius of curvature on the road is R, the banking angle is A, and the coefficient of friction is F. Determine the range of speeds the car can have without slipping up or down the road.

Finding the resultant force - a crash test

The sensor in the torso of a crash-test dummy records the magnitude of the net external force acting on it. If the dummy is thrown forward with a force of 130.0 N while simultaneously being hit from the side with a force of 4500.0 N, what force will the sensor report? I would like the formula used to solve this problem a

Propulsive force of large caliber aircraft gun used by German Air Force in WW2

The largest caliber aircraft gun operated by German Air Force in WW2 was the 12.8cm flak 40. The weapon fired a 25.8kg shell with a muzzle speed of 880m/s. What propulsive force was necessary to attain the muzzle speed within the 6.00m barrel (assume the shell moves horizontally w/consistant acceleration and neglect friction).

Reaction Force of a Uniform Ladder

An 8 m long, 12kg, uniform ladder leans against a frictionless wall making an angle of 65 degrees with the floor. A 75 kg person is able to climb to the 7 m mark on the ladder before it slips. What is the reaction force on the ground?

Calculating the average net force

A 62 kg person, standing on a diving board, dives straight down into the water. Just before striking the water, her speed is 5.50 m/s. At a time of 1.65 s after entering the water, her speed is reduced to 1.10 m/s. What is the average net force (magnitude and direction) that acts on her when she is in the water?

Finding the horizontal area enclosed by the waterline of a ship.

Suppose one of the navy ships bobs up to float 11cm higher in the water when 50 fighters take off from it in 25 minutes, at a location where g=9.78m/s^2. Bristling with bombs and missiles, the planes have average mass 29000kg. Find the horizontal area enclosed by the waterline of the 4 billion dollar ship. By comparison, its

Physics Rowboat Mercury Weight Density

You (m=80.0 kg) are in a rowboat (m=40.0 kg) of volume 0.300 m3. To answer the following, use the density of seawater as 10,050 N/m3. Before you step into the rowboat, how much water does the rowboat displace with nothing in it? What is the maximum load (excluding you and the boat) that you can take on before the rowboat sin