Recent content by physicsbro

Homework Statement I need to integrate this using partial fractions. "b/(x^2-a^2)" Homework Equations The Attempt at a Solution I have no idea where to begin.

Homework Statement A 29.3 kg block, m1, is on a horizontal surface, connected to a 6.70 kg block, m2, by a massless string as shown. The frictionless pulley has a radius R = 0.055 m and a moment of inertia I = 0.100 kg·m2. A force F = 202.5 N acts on m1 at an angle θ = 29.7°. There is no...

Homework Statement Five objects of equal mass are shown below together with the axis about which they are rotating. Select the objects in order of increasing rotational energy Solid Sphere, about any diameter, with R = 3 m and ω=5 rad/s Thin rod, about axis through center...

Thanks.

Homework Statement A 4.66 g bullet moving with an initial speed of vi = 410 m/s is fired into and passes through a 1.18 kg block.The block, initially at rest on a frictionless horizontal surface, is connected to a spring with a spring constant of 844 N/m. a) If the block moves x = 4.01 cm to...

Thanks, i got it.

I found the KE to be 1.28E+08 J, any hints for the second part of the question?

I'm not sure if this is right, but this is what i got for ω. i thought it would be 10300π/60s or 539.3 rad/s. I don't what I is for a flywheel, i want to say (1/2)mr^2.

I don't know.

Homework Statement A car is designed to get its energy from a rotating flywheel with a radius of 1.90 m and a mass of 487 kg. Before a trip, the flywheel is attached to an electric motor, which brings the flywheel's rotational speed up to 5150 revolutions per minute. Find the kinetic energy...