Answer:
The force is
Explanation:
From the question we are told that
The mechanical advantage is
The load is
The height is
Generally mechanical advantage is mathematically represented as
Here E is the force that must be applied to move the piano
=>
=>
=>
Given :
An electron moving in the positive x direction experiences a magnetic force in the positive z direction.
To Find :
The direction of the magnetic field.
Solution :
We know, force is given by :
Here, q = -e.
Now, for above condition to satisfy :
So,
Therefore, direction of magnetic field is negative y direction.
Hence, this is the required solution.