# Physics - Torque

A particle is acted on by two torques about the origin: T1 has a magnitude of 4.3 N*m and is directed in the positive direction of the x axis, and T2 has a magnitude of 3.2 N*m and is directed in the negative direction of the y axis. What are the magnitude [in N*m] and direction [counterclockwise from the +x axis] of dL/dt, where L is the angular momentum of the particle about the origin?

.. is there an equation that finds the magnitude of the net torques? help?

Add the torques as vectors.

T=I * angular acceleration is a VECTOR equation, as is

angularmomentum=I * angularvelocity

angular veloicty= wo + angacceleration*time
is also a vector equation. So add the vectors for T, solve for angacceleration, then solve for angular momentum.

Now on directions. When one indicates direction on a circular torque, or velocity, as in this case , use the right hand rule. Your stating the T1 is in the direction of x means it is rotating in the YZ plane, from Y to Z. I hope this is what you meant in the problem description.

1. 👍 0
2. 👎 0
3. 👁 86

## Similar Questions

1. ### Physics - Torque

A particle is acted on by two torques about the origin: T1 has a magnitude of 4.3 N*m and is directed in the positive direction of the x axis, and T2 has a magnitude of 3.2 N*m and is directed in the negative direction of the y

asked by COFFEE on March 31, 2007
2. ### Physics

I have two questions, both are about angular momentum so I thought I'd post them together. I'm really confused on anything regarding rolling wheels and things like that (help me please!. It seems as though the whole chapter was

asked by Emily on July 30, 2010
3. ### Physics

A 5.57-kg object passes through the origin at time t = 0 such that its x component of velocity is 5.25 m/s and its y component of velocity is -3.15 m/s. (a) What is the kinetic energy of the object at this time? (b) At a later

asked by mike on October 23, 2012
4. ### angular momentum

a 8.20 kg particle P has a position vector of magnitude 6.90 m and angle θ1 = 42.0° and a velocity vector of magnitude 6.70 m/s and angle θ2 = 25.0°. Force , of magnitude 8.90 N and angle θ3 = 28.0° acts on P. All three

asked by jose on May 30, 2012
5. ### science

the velocity of a particle is given by v=[16t^2i+4t^3j +(5t+2)k]m/s, where t is in seconds. If the particle is at the origin when t=0, determine the magnitude of the particle's acceleration when t=2s. What is the x,y,z coordinate

asked by sarah on November 3, 2008
6. ### AP Physics

At time t=0, a 2kg particle has position vector r=(5.0m)i+(-8.0m)j relative to the origin. Its velocity just then is given by v=(-5.0t^2m/s)i. For the following answers, use t for the time. A) About the origin and for t>0, what is

asked by Bernadette on February 8, 2008
7. ### Calc3

A particle initially at the origin travels in uniform motion with velocity v=2i-j-2k. Find position venctor vector r(t) of a particle at time t. Find equatio for the plane passing through the origin and perp. to the tragectory of

asked by Margo on September 18, 2012
8. ### physics

A 8.72 kg particle moves from the origin to position C , having coordinates x = 2.04 m and y = 2.04 m as shown in Figure 1. A particle moving in a horizontal plane from the origin to position C experiences a friction force with

asked by felix on November 19, 2018
9. ### Physics

In the figure, particle A moves along the line y = 26 m with a constant velocity of magnitude 2.6 m/s and parallel to the x axis. At the instant particle A passes the y axis, particle B leaves the origin with zero initial speed

asked by Anonymous on September 21, 2010
10. ### physics

In the figure, particle A moves along the line y = 29 m with a constant velocity of magnitude 3.5 m/s and parallel to the x axis. At the instant particle A passes the y axis, particle B leaves the origin with zero initial speed

asked by Anonymous on September 12, 2010

More Similar Questions