Question

Show
that
dl/dt


=
τ,
where
L
is
the
angular
momentum
and
τ
is
the


torque.​

Answer 1

Answer:

Given,

mass=1.67×10

27

kg, Velocty of proton is 7.0×10

6

m/s Velocity of neutron is 4.0×10

6

m/s

So, BY the conservation of momentum, let m be the mass of the proton, so 2m is the mass of the deuteron.

Initially, the momentum of the proton is −m×7×10

6

kgm/s

Initial momentum of the neutron is +m×4×10

6

kgm/s

so, total momentum is −m×10

6

kgm/s

Now, after the attachment of the mass 2m,

Let v be the velocity of the deuteron,

Then 2mv=−m×3×10

6

Canceling m then e get,

v=−1.5×10

6

m/s