Recent content by Anthonyphy2013

I have another question if the massless rod is in that case , should I consider the Kinetic energy to be the initial energy ?

Homework Statement A 75 g 30 cm long rod hangs vertically on a frictionless, horizontal axle passing through its center. A 10g ball of clay traveling horizontally at 2.5 m/s hits and stick to the very bottom tip of the rod. To what maximum angle measured from the vertical, does the rod with...

so you mean the mass is 50 not 865( 815+50) ?

Homework Statement If the radius of theCD below is 6.0cm and the angular velocity is 5.0 rad/s , what's is its angular displacement in 2.0s ? Homework Equations Delta θ = ωt+.5∂t^2 The Attempt at a Solution I know the angular velocity and the time but how can I find out the radial...

815 comes from the combined mass of the elevator and the scale . 9530N-(865*9.8)N=(865)a a=1.22 m/s2 Apparent weight=N=Mg(a/g+1) =(865*9.8)(1.22/9.8 + 1) 9532.3N Is that corrected ?

you mean the magnitude of the acceleration depends on the length . Could it be dependent on the tension as well ? Let's say , one rope is pulling the mass on the table on a horizontal frictionless pulley with the acceleration and that pulley is hanging two rope to the hanging mass going down. So...

That means I just consider the x and y component of the acceleration and put them to find the velocity of y component

Homework Statement An object of mass m1 =45kg sits on a horizontal frictionless table. A rope is attached to it , which runs horizontally to a frictionless pulley , then down to a hanging mass m2 = 5kg a) the acceleration of each mass b) the tension in the rope Homework Equations...

Homework Statement A woman stands on a scale in a moving elevator. Her mass is 50kg and the combined mass of the elevator accelerates upward. During the acceleration , the hoisting cable applies a force of 9350N. What does the scale read during the acceleration ? Homework Equations F...

Homework Statement At t=0, a particle leaves the origin with the velocity of 9.0m/s in the positive y direction and moves in the xy plane with a constant acceleration of ( 2.0i-4.0j) m/s ^2 . At the instant the x coordinate of the particle is 15 m , what is the speed of the particle ...

thanks so much

Homework Statement A speedy tortoise can run with a velocity of 01m/s and a hare can run 2.0m/s . In a race , the hare gives the tortoise a 2- minute head start. The tortoise wins the race by a shell ( 0.2m ) . What was the length of the race ? Homework Equations D =v/t , 20minute = 120 sec...

inelastic collision . Thats I am wondering the kinetic rotational energy is concluded and I am wondering the kinetic rotational energy is 1/2IW^2 and I = 1/2MR^2 + (M+m)R^2 ? how can I find angular velocity in this case ?

Homework Statement A 75 kg , 34 cm long rod hangs vertically on a frictionless , horizontal axle passing through its cener. A 15 g ball of clay traelling horizontally at 2.2m/s hits and sticks to the very bottom tip of the rod. To what maximum angle , measured from vertical , does the rod (...

Homework Statement A plane is traveling at 200 m/s following the arc of a vertical circle of radius R. At the top of its path, the passengers experience "weightlessness" .To one significant, what is the value of R ? Homework Equations Mv^2/R=Mat , N=mg(1+at/g) Velocity orbit =...