Otras carreras Mass sliding at angle

[Xiomy]

M1 and M2 are two masses connected as shown.

The pulley is light and frictionless. Find the mass M1, given that M2 (4.00 kg) is moving downwards and accelerates downwards at 3.41 m/s2, that θ is 15.0°, and that μk is 0.500.

[Jose D. Escobedo]

Re: Mass sliding at angle

Sorry, but I don't see anything. I can try to guess, but probably I'll make mistake. I think you should try to load the image again.

[Xiomy]

Re: Mass sliding at angle



Aqui esta la foto, la puse dos veceds pq en una copie el link y en otra lo puse adjunto.

Si no lo ven, por favor expliquenme como poner fotos, porque he hecho hasta lo imposible.

[Jose D. Escobedo]

Re: Mass sliding at angle

Solving up altogether and using Newton's 2nd law, we have:

all the forces acting on the direction of the motion (some in favor of it and some against it)= total mass of the system times the acceleration of the system

$m_2 g -m_1 g \sin \theta -m_1 g \mu_k \cos \theta = (m_2 + m_1) a$ you only need to find $m_1$

always take into consideration that frictional forces oppose to the motion, and pulleys are devices that change the direction of the motion if the are considered massless.

I see you later