Register to reply

Equilibrant & box and plank problems

by ariol
Tags: equilibrant, plank
Share this thread:
ariol
#1
Mar30-09, 12:24 PM
P: 7
Problem 3:
Two forces are exerted on a ring. The first force is a force of 20 N, 30 degrees North of East, and the second force is 15 N, 10 degrees West of North. What is the magnitude and direction of the equilibrant that keeps the ring from moving? Show all work.

Problem 4:
A 75-kg plastic box full of baseballs is resting on a long plank. If Ben raises one end of the plank up off the floor so it makes a 40 degree incline, what are the parallel and perpendicular weight components of the box with respect to the plank? Show all work.

Problem 5:

The same box in the previous problem starts to slide down the incline, if the coefficient of the kinetic friction is 0.32 what is the frictional force exerted on the box by the plank as it slides down the incline? Show all work.

Problem 6:
As Janelle distracts Ben, he ignores the box in problem 4 continue to slide down the plank at the same angle, what is the boxes acceleration as it heads towards the floor? Show all work.

Problem 7: Draw a free-body diagram of the forces acting on the box of baseballs as it slides down the plank in the previous problem (Draw vectors of appropriate length and label all the different forces.)
Phys.Org News Partner Science news on Phys.org
Experts defend operational earthquake forecasting, counter critiques
EU urged to convert TV frequencies to mobile broadband
Sierra Nevada freshwater runoff could drop 26 percent by 2100
Ofey
#2
Mar30-09, 12:30 PM
P: 75
Where do you get stuck?
arildno
#3
Mar30-09, 12:33 PM
Sci Advisor
HW Helper
PF Gold
P: 12,016
These problems are way too difficult for us to do all by ourselves, ariol.
Please, SHOW US YOUR WORK!!


Register to reply

Related Discussions
Finding magnitude and direction of equilibrant. Introductory Physics Homework 1
Direction of Equilibrant Introductory Physics Homework 1
Plank time, Plank length Quantum Physics 16
Cat on plank Introductory Physics Homework 1
Equilibrant force Introductory Physics Homework 2