Question

Human heart is pumping blood with constant velocity v m/s at the rate of M kg/s. Force required for this in N is

Answer 1

Force = Rate of change of momentum 

F = mv/t = (m/t)v = xv      [Note: m/t is x, which is given in the question]

So the required force is xv

Answer 2

Answer:

F = (Mv) Newton

Explanation:

It is given that,

Velocity with which human heart pump is (v) m/s at the rate of (M) kg/s. We need to find the force for this.

The formula for the force acting on an object is given by :

$F=ma$

Also, a = v/t

$F=\dfrac{mv}{t}$

Since, $\dfrac{m}{t}=M$

$F=M\times v$

or

F = (Mv) Newton

So, the force required for this is  (Mv) Newton. Hence, this is the required solution.