Recent content by shrutij

I'm not sure why the area of the shaded region is wrong. I found the area of the triangle, 1/2*3.54*-6.41. I'm assuming the work done would be negative since the force is negative. Could you explain please? Thanks so much!

Can someone please help me with this question? Really having trouble understanding the concepts. Thanks!

Homework Statement A 2.40 kg particle moving along the x-axis experiences the force shown, where Fmax=6.41 N, Fmin=-6.41 N, d1=1.77 m, d2=3.54 m, d3=5.31 m, and d4=7.08 m. At x=0.00 m the particle's velocity is 4.54 m/s. What is its velocity at x=3.54 m...

Well, I feel silly... i'll just be happy that atleast I understood the physics right. :) thanks!

Great, so going from that, 1/2kx^2=KE of the box. This gives me the same answer I got before. 1/2*92.2*0.155 = 7.15 J. I'm not sure what I'm missing in my calculations if this KE appears too big.

Am I right in assuming that all the spring potential energy should be converted into KE of the box?

I'm not sure what you mean when you say two forces One is the weight of the rocket, but the spring compression is the energy stored in the spring that will get converted to the kinetic energy of rocket, right? How do i relate the fnet=0 to the spring compression?

KE=Spring Potential energy 1/2mv^2=1/2 kx^2. I used this to find vf, which i then used to find KE. so KE=1/2*2.93*2.209^2= 7.15 J. This should be the initial KE of the box when it encounters the rough patch. Therefore, due to conservation, KEi=KEf + W done by friction. Since the final KE is 0...

Homework Statement A horizontal spring with spring constant 92.2 N/m is compressed 15.5 cm and used to launch a 2.93 kg box across a frictionless, horizontal surface. After the box travels some distance, the surface becomes rough. The coefficient of kinetic friction of the box on the surface...

I tried solving the quadratic equation, but didn't get the right answer. Can someone tell me where I went wrong with my approach? thanks

Homework Statement A 10.1 kg weather rocket generates a thrust of 193.0 N. The rocket, pointing upward, is clamped to the top of a vertical spring. The bottom of the spring, whose spring constant is 415.0 N/m, is anchored to the ground. (a) Initially, before the engine is ignited, the rocket...

Homework Statement A 0.211 kg shoe is dropped onto a vertically oriented spring with a spring constant of 102 N/m. The shoe becomes attached to the spring upon contact, and the spring is compressed 0.117 m before coming momentarily to rest. If the speed of the shoe just before impact is...

Homework Statement When a certain spring is stretched beyond its proportional limit, the restoring force satisfies the equation F=-kx+βx3. If k=8.7 N/m and β=95 N/m3, calculate the work done by this force when the spring is stretched 0.105 m. Homework Equations W= F*d The Attempt at...

Got it. Thanks so much!

So, normal force should be mg-68.9sin19.7 ?