Recent content by kavipach

Unless the P.E becomes greater when mass and since P.E=K.E, K.E becomes greater. But i don't understand how this would change the frequency.

i know that pendulums work due to the concervation of energy but i don't understand how this could be about a pendulum.

Homework Statement A thin uniform rod of mass m is suspended from one end and oscillates with a frequency f. If a small sphere of mass 2m is attached to the other end, does the frequency increase or decrease? Homework Equations The Attempt at a Solution I have reached a conclusion...

would it be pi/2 and 3pi/2?

Homework Statement 2cos2x-2cosx...how do you simplify this further? Homework Equations The Attempt at a Solution 2(cos2x-cosx)..but i have to find 0=2cos2x-2cosx so this doesn't really help me.

Homework Statement A sphere of radius r_0 = 24.0 cm and mass m = 1.20{\rm{ kg}} starts from rest and rolls without slipping down a 37.0^\circ incline that is 15.0 m long. Calculate its translational speed when it reaches the bottom. Homework Equations ke=1/2mv^2 pe=mgh The Attempt...

oh lord..k its 24. thanks alot

well the F here is the force which comes from Fn*CoFr=Ff where Fn equals Normal Force CoFr is co. of friction and Fr is force of friction. So if we subsitute F for Fn*CoFf, the masses on both sides cancel out. leaving us with CoFr*g*d=-vinitial^2/2. The by pluging in the values, i got -23...

it gave me -12..and aparently that isn't the right answer

the answer didnt work.

Homework Statement At an accident scene on a level road, investigators measure a car's skid mark to be 93m long. It was a rainy day and the coefficient of friction was estimated to be 0.32. Use these data to determine the speed of the car when the driver slammed on (and locked) the brakes...

Homework Statement If you stand on a bathroom scale, the spring inside the scale compresses 0.55mm, and it tells you your weight is 760 N. Now if you jump on the scale from a height of 1.3m, what does the scale read at its peak? Homework Equations F=kx K.E=1/2mv^2 The Attempt at a...

ya i think i can..thanks for all the help..your a life saver

The formula for gravitational potential energy is U=mgy where u equals the p.e, m equals mass and y is the displacement. the formula for the energy storedd in a spring is U=1/2kx^2

potential energy?