What is the direction of the friction force on the upper box

Assignment Help Electrical Engineering

Reference no: EM13247125

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 16cm/s. The coefficient of kinetic friction between the ramp and the lower box is 0.251, and the coefficient of static friction between the two boxes is 0.420.
What force do you need to exert to accomplish this?
What is the direction of the friction force on the upper box?

Reference no: EM13247125

Questions Cloud

Probability that the stock on that day closed : Is the normality assumption that was made at the beginning valid and what is the probability that the stock on that day closed at less than the mean for that year

Find the net charge on the ball : an electric field as shown in the figure. an electric field of 1000. v/m is directed toward the right. The ball has a mass of 2.00x10^-3 kg, what is the net charge on the ball

What is the change in the ions electric potential energy : A Na+ ion moves from inside a cell, where the electric potential is -70 mV , to outside the cell, where the potential is 0 V. What is the change in the ion's electric potential energy as it moves from inside to outside the cell

How many grams of carbon dioxide are produced : When the body metabolizes glucose water and carbon dioxide are produced according to the following equation. C6H12O6 + 6 O2 --> 6 CO2 + 6 H2O If 0 g of glucose are metabolized with excess oxygen

What is the direction of the friction force on the upper box : 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 16cm/s.

Complete the general education task : A local bank claims that the waiting time for its customers to be served is the lowest in the area. A competitor bank checks the waiting times at both banks.

Estimate the worst-case varation in film thickness : A wafer 100mm in diameter is mounted in an electron-beam evaporation system in which the spherical radius is 40cm. Use Eq. 6.7 to estimate the worst-case varation in film thickness between the center and edges

Calculate both doping densities in p-n junction : A silicon (ni= 10^10 cm^-3) p-n junction diode has a maximum electric field of -10^6 V/cm and a depletion layer width of 1 um. The acceptor density in the p-type region is four times larger than the donor density in the n-type region.

Find direction of magnetic field in soft iron bar : A soft iron bar is sitsting surrounded by two separate loops of wire. The loop on the left, L1, initially has a current flowing clockwise as viewed from the right, What will be direction of magnetic field in soft iron bar

User Account

All Pages