lar momentum of the comet about the Sun is conservel cause n

lar momentum of the comet about the Sun is conservel, cause no torque acts on the comet. The gravitational force exerted by the Sun has zero moment arm. rope passes over a light, frictionless pulley, One end is fastened to a bunch of bananas of mass M, and a monkey of mass M clings to the other end (Fig, P11.48). The mor 48. A light Figure P11.48

Solution

A. (frictionless pulley)

Sum of torques = 0 = Mg*R - Mg*R

B. Angular momentum conservation

Li = Lf

But since Li = 0

So if monkey goes up at speed v then

Lm = r x p

since(r and p are perpendicular)

Lm = mvr

Bot total L = 0

means banana must move at same L = mvr

Now,M is same in both cases, So V must be equal

So monkey will never reach to bananas.

Let me know if you have any doubt.