What is the minimum angle for moving a mass with a static
friction
s for an angle
?
Does your answer make sense? What happens if
=0?
=
/2?
What is the minimum angle for moving a mass with a static friction s for an...
What is the critical angle for a moving mass with static
friction for an angle theta? Does your answer make sense? What
happens when theta equals 0 and pi/2?
A rod of length L, mass m , and R resistance slides down with no
friction. A set of two conducting, parallel railings with
negligible resistance (held at an angle to the ground). A constant
magnetic field B is present everywhere and is directed upwards
(perpendicular to the ground)
For the following values:
What is the velocity of the rod at equilibrium ? (g=10m/s^2)
We were unable to transcribe this imageWe were unable to transcribe this image
A rod of length L, mass m , and R resistance slides down with no
friction. A set of two conducting, parallel railings with
negligible resistance (held at an angle to the ground). A constant
magnetic field B is present everywhere and is directed upwards
(perpendicular to the ground)
For the following values:
What is the velocity of the rod at equilibrium ? (g=10m/s^2)
We were unable to transcribe this imageWe were unable to transcribe this image
Ex: Friction and inclined plane. A box of mass 10 kilograms is placed on an inclined plane so that it is at rest. The coefficients of static and kinetic friction between the surfaces of the plane and the box Are 0.4 and 0.3 respectively. a) For what value of the angle of inclination of the plane the box will start sliding down the plane ? b) Find out its acceleration as it slides down the plane. We were unable to...
a particle of mass m is given velocity on rough horizontal surface Coefficient of friction is there is also variable external force acts on particle given by F=kV where K is constant & V is instaneous velocity direction of force at any instant is perpendicular to velocity the particle moves in an instaneous circular path of variable radius then time taken by particle to stop is time taken to reduce the angle between acceleration and velocity from to is Total...
1. A formula that could be used to measure the force of friction
is Ff < mFN.
If you were given a force measuring device (e.g.,
spring scale, force probe) and an object, describe in a few
sentences the procedure that one could use to determine the
coefficient of static friction.
If you were given a force measuring device (e.g.,
spring scale, force probe) and an object, describe in a few
sentences the procedure that one could use to determine...
5. [1pt]
A mass is vibrating at the end of a spring with a spring constant
1.99 N/m. The figure shows a graph of its position x (in
centimetres) as a function of time t (in seconds). At what time
between t=0 s and the first maximum after t=0 s is the mass not
moving?
Answer:
Video tutorial
6. [1pt]
What is the magnitude of the acceleration of the object at the
second maximum in the x-t curve after t...
What is the angle that allows you to throw the ball the farthest
distance given that you are standing a height h above the target?
Hints: 1. you can simplify the math recognizing that h =
xftan ()
2. also you can simplify your answer using cot
= tan( (/2)
-
)
We were unable to transcribe this imageWe were unable to transcribe this imageWe were unable to transcribe this imageWe were unable to transcribe this imageWe were unable to...
2. In Figure the coefficient of static friction between mass mA and the table is 0.40, whereas the coefficient of kinetic friction is 0.30 (a) What minimum value of mA will keep the system from starting to move? (b) What value(s) of mA will keep the system moving at constant speed?
A block of mass m is attached by means of a spring of constant
to a wedge of mass
and height
that forms an angle
with the horizontal, as shown in the figure. Mass
can slide on the horizontal surface. Note: don't consider
friction.
a) Calculate the frequencies of small oscillations of the system
around equilibrium.
b) Find and schematically draw the relative configurations of the
normal modes corresponding to each frequency of the system.
We were unable to transcribe...