Recent content by kimjh

I put the mgr=1/2 * m * v**2 but I can't find.. any ideay someone has this?

Also L= should equal to r~

I think it is full vertical circle..I still trying another way..Please keep on eye this~

Please help this urgent problem!~ Homework Statement An elastic spring is made of two springs connected one after the other. The coefficients of the springs are k 1 = 1,476 N/m and k 2 = 3,271 N/m. Calculate the work necessary to strech the spring for x=10cm. Homework Equations...

Please help this urgent problem!~ Homework Statement A ball is tied to a light string L=1.39m . What is the minimum horizontal speed of the ball which will ensutre that the ball makes a full vertical circle? Homework Equations I still struggle how this answer is 8.25 The...

What I 've know about this question's information is to find the distace between position of first hit and second hit of droping ball from 1.1 m height. Also it is I thinki have to use this formula; y=x*tan(32)-9.8*x^^2/2*(v0*cos(theta)^^2) is that right? answer is 4.7m but I really don;t...

Please!1 small elastic ball is dropped from the height h = 1.1 m onto an incline. After hitting the incline the ball bounces and hits the incline the second time. The ball bounces at same speed with which it hits the incline. The angle of the incline is 32 degrees. The angle between the normal...

An object moving along a straight line, at constant acceleration covers two equal, consecutive, 11 m long segments, the first one in t 1 = 1.0 s and the second one in t 2 = 2.3 s . What was the magnitude of acceleration? (in m/s2)

Two objects 1 and 2 are moving towards each other, 1 along the x-axis and the 2 along the y axis. Initially, object 1 is at (- 26.7,0) (in m) moving at speed v 1 = 10.6 m/s, while 2 is at (0.-39.3) (in m) moving at speed v 2 = 8.5 m/s. How long does it take until the objects are at the minimum...