A 930 g rock is whirled in a horizontal circle at the end of a 1.3 m-long string. If the breaking strength of the string is 110 N, what is the maximum allowable speed of the rock?
OK the main problem that i am having with this equation is the fact that no angle is given. Is there a way to...
i changed the speed from km/h to m/s 60 km/h = 16.67 m/s
there is no given curve however:
if Fc cos (theta) = Weight sin (theta)
(V2/r) cos (theta) = g sin (theta)
then (V2/ g r ) = sin theta / cos theta = tan theta
theta = tan inverse (V2/ g r)
theta = 11.446
but how does...
A car moving at 41 km/h negotiates a 140 m-radius banked turn designed for 60 km/h. What coefficient of friction is needed to keep the car on the road?
Ok can some one tell me what i did wrong?
Fc= (m*V2)/r = m µ g
Vmax= square root of ((µ) g r)
60 = square root (µ*9.8*140)
for...
A tow truck is connected to a 1500 kg car by a cable that makes a 23o angle to the horizontal. If the truck accelerates at 0.59 m/s2, what is the magnitude of the cable tension? Neglect friction and the mass of the cable.
i know that the car is accelerating at the same rate. my question...