Center of Mass
The center of mass also goes by this term
This Greek letter represents summation.
What is sigma?
This Greek letter represents the coefficient of friction.
The spring constant is represented by this letter.
What is k?
This letter represents the gravitational constant.
What is G ?
Find the center of mass of the following:
m1: 5 kg at x=2
m2: 7 kg at x=5
What is x= 3.75 ?
Net force is always equal to this number when in equilibrium
What is 0?
A 10 kg box on a table (static friction coefficient 0.30) is being pushed to the right. Find the force of friction.
What is 29.4 N?
The natural resting position for a spring is called this term.
What is equilibrium?
This letter represents the acceleration due to gravity.
What is g ?
Find the center of mass of the following:
m1: 2 kg at x=4
m2: 2 kg at x= -2
m3: 2 kg at x=1
What is x=1 ?
A box sitting at rest on a horizontal surface undergoes these two forces.
What is Force of Gravity and Normal Force?
A book of mass 5 kg is being pushed to the right across a horizontal surface with 10 N of force. If the coefficient of kinetic friction is 0.15, find the acceleration.
round to 2 decimal places if needed
What is a=0.53 m/s/s ?
A spring's natural equilibrium position is at 0.20 m and the spring is then compressed to 0.15 m. Find the change in position.
What is x=0.05 m?
A box weighs 70 N. Find its mass.
round to 2 decimal points if needed.
What is m=7.14 kg?
Find the center of mass of the following:
m1: 8 kg at (1, 3)
m2: 10 kg at (2, 8)
round to 2 decimal points
What is (1.56, 5.78) ?
When using a tilted frame of reference for ramps, the new horizontal direction is called this.
What is parallel?
A frictionless pulley is holding a 10 kg mass on the left and a 20 kg mass on the right by a massless rope. Find the acceleration of the system.
round to 2 decimal places if needed
What is |a|=3.27 m/s/s ?
A horizontal spring is being compressed 0.20 m by a force of 50 N. Find the spring constant.
What is k=250 N/m ?
round to two decimal places and use scientific notation
What is Fg=2.20x10^-10 N ?
Find the center of velocity of the following:
m1: 500 kg at 10 m/s
m2: 1000 kg at -20 m/s
What is v=-10 m/s
A box experiences these forces. What is the net force and in what direction does it move?
F1: 100 N down
F2: 50 N up
F3: 60 N left
F4: 60 N right
What is 50 N down?
round to 2 decimal points if needed
What is T=183.75 N?
A spring hanging from the ceiling has a spring constant of 450 N/m. A weight with mass 30 kg hangs from the spring. Find the distance the spring is stretched from equilibrium.
round to 2 decimal points if needed
What is x=0.65 m ?
The earth has a radius of 6.4x10^6 m and a mass of 6x10^24 kg. The moon has a radius of 1.74x10^6 m and a mass of 7.3x10^22 kg. The moon is 3.84x10^8 m away from the earth. Find the gravitational force between the two planetary objects.
round to 2 decimal places and use scientific notation
What is Fg=1.90x10^20 N?