Recent content by mmiller9913

o wow forgot to square r, heh sorry

.12 is in the problem because its the inertia of the rod both before and after the collision

i know .12 = 1/3ML^2

Homework Statement The uniform rod (length 0.60 m, mass 1.0 kg) in Fig. 11-54 rotates in the plane of the figure about an axis through one end, with a rotational inertia of 0.12 kg·m2. As the rod swings through its lowest position, it collides with a 0.20 kg putty wad that sticks to the end of...

Homework Statement Alice and Bill, who happen to have the same mass, both want to climb to the top of a mountain. Bill wants to take the steep path straight up, but Alice wants to take the path that gently winds around the mountain, even though it is 8 times longer than the steep path...

Homework Statement Determine the amount of work done in firing a 2.0-kg projectile with an initial speed of 50 m/s. Neglect any effects due to air resistance Homework Equations W = delta K K = 1/2mv^2 The Attempt at a Solution just take K= 1/2(2)(50)^2 to get 2500...it seems...

Homework Statement Four identical particles of mass 0.351 kg each are placed at the vertices of a 3.50 m x 3.50 m square and held there by four massless rods, which form the sides of the square. What is the rotational inertia of this rigid body about an axis that (a) passes through the...

Homework Statement An object is given a push along a surface of which the coefficient of kinetic friction is .20. The initial velocity is 4m/s. How far does it go before it stops. Homework Equations Fnet=ma Ff=U(Fn) The Attempt at a Solution Is it just me or do you have to know...

Homework Statement A bicyclist travels in a circle of radius 22.5 m at a constant speed of 8.62 m/s. The bicycle-rider mass is 79 kg. Calculate the magnitudes of (a) the force of friction on the bicycle from the road and (b) the net force on the bicycle from the road. Homework Equations...

Homework Statement Suppose the coefficient of static friction between the road and the tires on a car is .60 and the car has no negative lift. What speed will put the car on the verge of sliding as it rounds a level curve 30.5m in radius. Homework Equations A=V^2/R F=MV^2/R The...

okay so ... Fa-Fs-Fgcostheta=-ma I don't see how this can be solved though

I don't see the three forces that act on it...the applied force, the static friction force, and?

Homework Statement A loaded penguin sled weighing 66 N rests on a plane inclined at angle θ = 18° to the horizontal (Fig. 6-23). Between the sled and the plane, the coefficient of static friction is 0.27, and the coefficient of kinetic friction is 0.18. (a) What is the minimum magnitude of the...