[raviranjan10e]

a smooth right circular cone of semi vertical angle x{tan x=5/12}is at rest on a horizontalplane.a rubber ring of mass 2.5 kg which requires a force 15n for an extension of 10cm is placed on the cone.find the increase in radius of ring in equillibrium.

[ebaines]

Ravi:

Basic steps for this are:

1. Draw the free body diagram for the ring - this will let you determine the normal force that would keep it in equilibrium.
2. That normal force can be considered to have a vertical component and a horizontal component. The vertical component you already know (the ring's weight), so given the geometry of the cone you can now determine the horizontal componet of force.
3. The horizontal force causes the ring to stretch. Use the relationship for force versus estension of a spring:
F = kx. You determine k using the data you've been given.

Post back with what you get for an answer, and we'll check it for you.

[SaraEslinger]

Am I ever going to find true happiness

[ebaines]

Am I ever going to find true happiness

Sara:

1. Please do not tag a new question onto an old thread. Instead you should start a new question topic.

2. This forum is for questions about physics. I think you probably meant to ask a psychic this question. I suggest you post in the Society & Culture>Spritiuality forum.

Thanks

[nishank bansal]

A person got tired when he stands 2-3 hours holding a briefcase although he is not moving

[ebaines]

a person got tired when he stands 2-3 hours holding a briefcase although he is not moving

Please do not double post questions, or tag a new unrelated question onto an old thread. Your question is answered here: https://www.askmehelpdesk.com/high-school/free-online-ask-ouestions-physics-683730.html#post3198545

[whitey1218]

I have a 01 silverado with a 4.8l. I had the code p0332 and I replaced both knock sensors and the wiring harness and intake gaskets and cleared the code stored in the memory. Took it for drive then the code p0327 was pending then drove some more and the fault code was there. I was watching the timing and the load on the engine and they are both things that knock sensor 1 reads. The timing would drop to 9 degrees then slowly start to raise and the load on the engine would jump up above 80% when I would try to accelerate a little hard getting onto the highway. It only has maybe half the power it's supposed to have. What's causing this?

[markooo]

The Hoover Dam produces electricity which powers parts of Nevada and California. It is made up of 17 generators, each of which produces electricity with a voltage of about 1.60 × 104 volts and a current of about 7.40 × 103 amps. How much power is produced by each generator ?
A. 2.16 watts
B. 11.8 watts
C. 1.18 × 108 watts
D. 2.34 × 104 watts
E. 8.6 × 103 watts

[ebaines]

markooo:

Power (in watts) = voltage times current. Do the math.

[markooo]

Thank you very much !
I got one more question
What happens if you double the number of batteries used in a circuit? (Assume all of the batteries are the same.)

A. The current doubles only.
B. The voltage doubles only.
C. The current decreases.
D. The voltage decreases.
E. The voltage and current doubles.

[ebaines]

Depends if the new batteries are in parallel or series with the original set, and the nature of the load the batteries are driving. When you put batteries in series the voltage adds and current capacity remains the same, but whether current flow is constant depends on the circuit. When you put batteries in parallel the voltage remains the same and the current capacity increases, but again whether current draw actually increases depends on the nature of the load.

[markooo]

Thanks. What about this question ?
Consider three objects: A, B, and C. If A is positively charged, B repels A, and C is attracted by A, what can you say about the charge on B and C?
A. B is positively charged and C is negatively charged.
B. B is negatively charged and C is positively charged.
C. Both B and C are positively charged.
D. Both B and C are negatively charged.
E. B has no charge and C is positively charged.

[ebaines]

What do you think the answer is, and why?

[Jerin Kalita]

Show that if in system s’ we have uy^'=sin⁡ϕ and u^' x=e cos⁡ϕ, then in frame s, 4x^2+4y^2= c^2, where s’ is moving with a constant velocity v w.r.t. x the frame s along the +ve direction.

[Jerin Kalita]

Show that if in system s' we have uy^'=sin⁡ϕ and u^' x=e cos⁡ϕ, then in frame s, 4x^2+4y^2= c^2, where s' is moving with a constant velocity v w.r.t. x the frame s along the +ve direction.

[Jerin Kalita]

Show that if in system s’ we have uy^'=sin⁡ϕ and u^' x=e cos⁡ϕ, then in frame s, 4x^2+4y^2= c^2, where s’ is moving with a constant velocity v w.r.t. x the frame s along the +ve direction.