Recent content by James2911

Homework Statement How do Initial and Final Kinetic Energy depend on each other? Homework EquationsThe Attempt at a Solution Do they remain equal? For example for the same mass m, can we write KE1 = KE2 1/2 m v1^2 = 1/2 m v2^2

This is it! I did what you said, and I got the exact answers! When m is below the minimum, M will slide down When m is above the maximum, M will slide up & Friction will orient itself according to motion. (Opposing motion in each case) I now see why the answer in my original post was one of...

This is where my doubt lies. How do I determine which one is which? You said I solved the problem for one case, but what I am thinking is that I have only arrived at the relation and from here I need to manipulate it in order to arrive at the required answer. u is μ (coefficient of friction)...

Homework Statement [/B] Two blocks A and B of masses m and M are connected to the two ends of a string passing over a pulley. B lies on plane inclined at angle theta with the horizontal and A is hanging freely as shown. The coefficient of static friction between B and the plane is us. Find the...

I never saw that quadratic equation coming! Thank you. This it!

Yes I did but this is what happened; ab = 9 -------- (1) b-a = 10^-3 b = a + 10^-3 -- substituting in (1) a(a+10^-3) = 9 Still stuck! :(

Homework Statement The capacitance of a spherical condenser is 1uF. If the spacing between the two spheres is 1mm, then what is the radius of the outer sphere Homework Equations [/B] C = 4 pi Epsilon * ab/b-a (for a spherical capacitor) The Attempt at a Solution Given C = 1uF (u = 10^-6) b-a...

Thank you sir!

Thank you! It worked! if we consider the system between Q and P; Tq - Tp - 0.1g - 1.9g = 2a 50 - 2(9.8+0.2) = Tp Tp = 50 - 20 Tp = 30 This did bring out the right answer. But instead of my traditional method of drawing FBD of a body, I considered a system between P and Q and took the forces...

Homework Statement Calculate Tension (Tp) and (TQ) (P is the mid point) Homework Equations T - mg = maThe Attempt at a Solution For Q (massless rope) Tq - 1.9g - 0.2g - 2.9g = 5a Tq = 5(g+a) Tq = 5 * 10 = 50N Given answer = 50N (Calculation of Tension for Q is clear to me, but I am...

Thank you so much!

Homework Statement https://imgur.com/a/bvcxjNy Homework Equations Since the elevator is accelerating upwards, N - mg = ma or N = m(g+a) ------------ (1) The Attempt at a Solution In order to get the accelerations at that instant, I drew a tangent at that point and used v2 - v1/t2 - t1 = a...

Hi. I have three questionns to ask. A very close point on the axis foo a current carrying circular coil (x<<<R) of radius R, the value of magnetic field decreases by a fraction of 5% with respect to the center value. The position of the point from the center of the coil is: (a) R/10^1/2 (b)...