Homework Statement
Three balls are attached to a rod. Ball one has mass 0.614 kg and is 14.0 cm from the pivot. Ball two has mass 0.634 kg and is 25.0 cm from the pivot. Ball three has mass 0.729 kg and is 35.0 cm from the pivot. The rod has length 86.0 cm and mass 0.486 kg. Calculate the...
Homework Statement
A mass M of 5.20E-1 kg slides inside a hoop of radius R=1.10 m with negligible friction. When M is at the top, it has a speed of 4.25 m/s. Calculate the size of the force with which the M pushes on the hoop when M is at an angle of 44.0°.
Homework Equations
E = Pe +...
Homework Statement
It takes 23 hours 56 minutes and 4 seconds for the Earth to make one revolution (mean sidereal day). What is the angular speed of the earth?
7.29×10-5 rad/s
(Got this one not too badly)
Assume the Earth is spherical. Relative to someone on the rotation axis, what is...
Homework Statement
M1 and M2 are two masses connected as shown. The pulley is light (massless) and frictionless.
Find the mass M1, given that M2 (3.5 kg) accelerates downwards at 2.77 m/s2, θ is 25o, and μk is 0.37.
Homework Equations
F = ma
F = mg
Ff = μkNThe Attempt at a Solution...
Homework Statement
It takes a minimum distance of 41.14 m to stop a car moving at 11.0 m/s by applying the brakes (without locking the wheels). Assume that the same frictional forces apply and find the minimum stopping distance when the car is moving at 25.0 m/s.
Homework Equations
I'm...
Hey all, I'm an idiot when it comes to algebra/physics/anything with numbers so you'll probably be seeing me around a lot until the end of the semester, but I'll try to lend aid when I can
Anyway, this is what I've got:
Homework Statement
A 0.267 kg ball is thrown straight up from 2.33 m...