A box rests on a flatbed truck moving downhill. Find the minimum stopping distance if the box must not slide forward.

A crate rests on a truck which is traveling at speed V= 26 m/sec down a hill inclined at angle b= 8 degrees. The coefficient of friction between crate and truckbed is f= .50. Find the shortest stopping distance such that the crate does not slide forward. SEE ATTACHMENT #1 for a diagram showing parameters.

Block B is on Block A on a table. Find maximum force P on Block A such that B does not slide off.

Block B whose weight B= 22 nt, is placed on top of Block A whose weight is A= 44 nt. The coefficient of friction for all surfaces is f= .20. A horizontal force P is applied to A to slide both objects across the horizontal table. Find the maximum force P such that block B does not slide relative to Block A. SEE ATTACHMENT #1 fo ...continues

A car moves over the arc of a bridge. Find the maximum speed possible if the car is not to lose contact.

On a country road, a car whose mass is 1800 kg drives over a bridge which forms a circular arc whose radius is 80 meters. PART a. Find the maximum speed of the car at the highest point of the bridge, in order that the car barely remains in contact. PART b. If the speed of the car at the highest point is 21 m/sec, find the n ...continues

A thin rod with evenly spaced masses attached rotates in space. Find the tension in each rod.

A thin rod of negligible mass is 6 meters long. Five equal masses, each M= 2.5 kg, are attached to the rod evenly spaced 1.2 meters apart. In gravity free space, the system rotates about the center of the rod, completing 15 revolutions every 6 seconds. Find the tension in each of the sections of the rod. SEE ATTACHMENT #1 for ...continues

Newton's laws of Motion

If a beach ball with mass 0.0800kg is thrown vertically upward in a vaccum, so there is no drag force on it, it reaches a height of 10.0m. If the ball is thrown upward with the same initial velocity but in air instead of vacuum, its maximum height is 8.4m. What is the drag force on the ball, assuming that it is constant during ...continues

Concept of centripetal force on a curved road.

On a highway curve with radium 50m, the maximum centripedal force that can act on a 1,000kg car going around the curve is 8,000 Newtons. What speed limit should be posted for the curve so that cars can negotiate it safely?

Density of material

The standard kilogram is a platinum-iridium cylinder 39.0mm in height and 39.0mm in diameter. What is the density of the material?

Acceleration

A 50.0-g superball traveling at 25.0 m/s bounces off a brick wall and rebounds at 22.0 m/s. A high-speed camera records the event. If the ball is in contact with the wall for 3.50 ms, what is the magnitude of the average acceleration of the ball during this time interval? (note: 1 ms= 10^-3 s.)

Components of a vector

A golfer on the green takes three strokes to sink the ball. The successive diplacements are 4.00m to the north, 2.00m north east and 1.00m at 30 degrees west of south. Starting at the same initial point, an expert golfer could make the hole in what single-displacement?

Components of a vector and unit vectors

While exploring a cave a woman starts at the entrance and moves the following distances. She goes 75.0m north,250m east, 125m @an angle of 30 degrees north of east and 150m south. Find the resultant displacement from the cave entrance.