Recent content by momo1111

Thanks for your response!, I think I understood part of what you said, but not everything... I'm still a bit confused. By ‘critical angle,’ do you mean a specific angle at which the board, when released from rest, will immediately start accelerating vertically faster than gravity? At such an...

The acceleration at the rod's end can be divided into radial and tangential components. However, I’m still unclear on why only the tangential component is considered when discussing vertical acceleration. Shouldn’t the radial component also contribute to the vertical direction? What am I missing?

Hey! In this setup, https://sciencedemonstrations.fas.harvard.edu/presentations/falling-faster-g ,a board rotating about a fixed axis under gravity, The board's angle θ is measured from the horizontal, Angular acceleration is given by α = MgRcosθ / I Then we're asked to find the acceleration of...

fix notation

Homework Statement Ball of mass M collide two balls of mass m , elastic collision . initially, M has velocity v , and two balls are stationary. after the collision the two masses move ,like in figure , v_a , v_b / What is the velocity V ,of mass M after the collision ? Homework...

Obviously I am missing something :)

Homework Statement [/B] 2 masses connected with a solid rod .distace between them is 2L , total mass is M . B total mass is m ,length L can freely move between A and A' on flat and frictionless surface. all collisions are elastic. at the beginning B was stuck to A and all the...

How ? the ball bounce at some parabolic curve . the time of flight depends on the initial vertical velocity , v_{0y} . i know that |\vec v_0| =\sqrt{2gh} ,and that it . |v_{0y}| = ? .

thanks :) ...mgH of course:) Q : So what is the average rate that energy is lost ? some scrawling ... if mgH is the energy lost per cycle ...and if at some point it was E_0 then after ... say 5 steps it become E_0 - 5 (mgH) ... so they ask me to find \frac{E_0-5(mgH)}{5} or...

Homework Statement A ball bounces down a uniform flight of stairs of height [FONT=Book Antiqua]H , rising after each bounce to to the level [FONT=Times New Roman]h of the previous stair . the velocity of the ball before the impact is equal in all the impacts . what is the average power of...

What is the orientation of the hemisphere ? case 1 : flux = (surface of semi Circle )*E or case 2 : flux = (surface of a Circle )*E

sorry about my English ... - What came in must come out ... 3. this is your Diagram: (N.B. the dots in the cone are just to give it shape) E -->.../.\ -->../...\ -->./...\ <---- cone -->/____\___________ <- table ... E -->.../! -->../.! -->./..! <---- half cone...