Recent content by Victorian91

First of all, the situation is as follows : A girl is swinging a bucket filled with water, and she is whirling it around in a vertical motion. When the bucket is at any other position on the circumference of the circle, everything seems fine and intuitive. But an interesting thing...

First of all I would like to apologize if I made myself unclear.. Anyway here it goes.. Basically, if we plot a graph of phase difference between the driving pendulum and driven pendulum against the frequency of the forced oscillation, at the natural frequency of the pendulum, the phase...

What happens if the frequency of the forced oscillation is Pi / 2 radians out of phase of the natural frequency of the spring mass system? I guess this makes the amplitude of the spring mass system to oscillate at a maximum amplitude.. Am I correct? Thanks in advanced..

Hi, I think I might have the solution for your problem. First of all, I think that the answer s = 0.104m is not really that accurate.. I tried plugging in your answer and it won't meet at that distance below the window.. Anyway, here is my solution, I used g = 9.81ms^-2 First ball, s =...

Homework Statement A uniform rod AB is hinged smoothly at A. The length L of the rod is 50cm. Determine a) The angular velocity, of the rod when it makes an angle (Theta) =30o with the vertical. ( Moment of inertia of rod about axis through one end and perpendicular to the rod = 1/3...

The final velocity of the object will be pointing downwards.. Hence, the it will be the same magnitude as the initial velocity but pointing downwards.. That is what I think.. Is my answer correct? Or are there any other answers.. Thanks

Okay i think I might be able to solve it.. Finally I manage to attempt this question.. Initial velocity, v = ( vcos45 )^2 + ( vsin45 )^2 ( using pythagorean theorum ) ( to find the resultant velocity Therefore initial velocity = v Hence, initial momentum, p =mv Final velocity, v is the...

Homework Statement An object of mass m is launched at speed v from point P on horizontal ground at an angle of elevation of 45 degrees, as shown in the picture. When the object reaches point Q the magnitude of the change in momentum of the object is ? Homework Equations Change in...

Hey I am confused about the direction of reaction force.. When a ball is on a vertical track at the bottom most of the track, I understand that the reaction is opposite the weight of the ball, mg. But when it is directly above the vertical track the reaction force is towards the center...

Okay thanks ... Sorry.. I was actually not focusing.. Thanks.. I got it already. Next time I'll check on units.. Thanks

Homework Statement A star of mass M and radius r rotates with angular speed of such value that objects on the surface at its equator are just about to experience zero apparent weight. The period of rotation of the star is given by? Homework Equations g' = g- Rw[SUB]2 (where w is the...

Well, Its PRE - U Text STPM Physics (Volume 1 ) Maybe a printing error.. :confused:

Yes I agree with you.. Just that I was skeptical when my textbook included the 2(2R) and 2(3R) That is why I post this .. Could anyone know why?

Hi, I am just wandering based on the formula.. [SIZE="6"]F = GMm/r^2 Is the gravitational force exerted by the Earth on the moon is the same as the gravitational force exerted by the moon on Earth ? It should be the same right? Both lies on a same radius.. Can someone clarify...

I don't think so.. Since the radius,r of the telescope is just about 10% of the radius of the Earth. Then it can be ignored.. Just use R for the radius of Earth. Hence, Period of revolution of telescope = 2Pi Square root R/g =84.43min