How to keep the pole motionless in a horizontal position

Reference no: EM138017

Q1. A 19 kg box slides 4.0 {rm m} down the frictionless ramp shown in the figure , then collides with a spring whose spring constant is 160 N/m.At what compression of the spring does the box have its maximum speed?

Q2. You're carrying a 3.6-m-long, 25kg pole to a construction site when you decide to stop for a rest. You place one end of the pole on a fence post and hold the other end of the pole 35cm from its tip.

How much force must you exert to keep the pole motionless in a horizontal position?

Reference no: EM138017

Questions Cloud

Calculate the change in kinetic energy of the ball : From a cliff that is 9.4 m above a lake, a young woman (mass 44 kg) jumps from rest, straight down into the water. At the instant she strikes the water, what is her de Broglie wavelength.

What is the light intensity reaching the photocell : Assume unpolarized light of intensity 197 W/m2 falls on the polarizer in the figure, and the angle in the drawing is 37.0°. What is the light intensity reaching the photocell?

Evaluate the t statistic for testing contrast : The ANOVA table is given below,as well as a table of means and standard deviations for the three groups. Evaluate the t statistic for testing contrast

What is the sign of the charge on the wire : How many 95W light bulbs can you use in a 120V circuit without tripping a 17A circuit breaker? (The bulbs are connected in parallel, which means that the potential difference across each light bulb is V.)

How to keep the pole motionless in a horizontal position : You're carrying a 3.6-m-long, 25kg pole to a construction site when you decide to stop for a rest. You place one end of the pole on a fence post and hold the other end of the pole 35cm from its tip.

Correct conclusions from this procedure : Multiple comparison procedures are going to be done using the Bonferroni method with α = 0.10. The value of t** is 2.2426. The smallest minimum significant difference (MSD) for finding a difference between groups is computed as 17.68. The correct ..

Calculate the acceleration of the counterweight : A rifle fires a 2.39 10-2-kg pellet straight upward, since the pellet rests on a compressed spring that is released when the trigger is pulled. The spring has a negligible mass and is compressed by 9.17 10-2 m from its unstrained length. The pellet r..

The right of support is the plank''s center of gravity : A father (m = 90 kg) and son (m = 45 kg) are standing facing each other on a frozen pond. The son pushes on the father and finds himself moving backward at 3 m/s after they have separated. How fast is the father moving.

Partial anova table : Assume the data for the three groups are independent and the data are approximately Normal. The P-value is less than 0.01. The correct conclusion is that

User Account

All Pages