Torque can be calculated by multiplying the force ( n ) applied at 90 â to the lever arm at a distance ( m ) from the pivot point (point of rotation), the compound si unit for the torque is nâm . if the force (at 90 â to the lever arm) applied is 15 n and it is applied at 2.0 m from the pivot point (point of rotation), what is the torque on the lever?

The torque on the lever is 30.0 N m.

Explanation:

Torque is defined as tendency of a force to rotate a body around its axis. Mathematically written as:

Force applied on the lever arm at 90°= 15 N

Distance at which force is applied = d = 2.0 m

The torque on the lever is 30.0 N m.

a. are

electrical potential energy =0.072 j

explanation:

electrical potential energy is given by

u= q δv

q= charge=6 c

δv= potential difference and is given by

δv= e d

e= electric field

d= distance=5 mm=0.005 m

δv=2.4 (0.005)=0.012 v

now electric potential energy= u= q δv

u=6 (0.012)

u=0.072 j