Answer:
128.6 N
Explanation:
To find the force pulling the roller along the ground, we need to find the component of the force that is parallel to the ground. This can be done by using the equation:
where
F is the magnitude of the force
is the angle between the direction of the force and the direction of the ground level
Here we have:
F = 200 N
Substituting into the equation,
Because the handle bars have nothing to do with the force of the pedals
Answer with Explanation:
We are given that
a.Length of segment,l=20 m
Magnetic force ,F=
Substitute the values
Hence, the magnetic force exert by each segment on the other=0.0119 N
b.We know that when current carrying in the wires are in same direction then the force will attract to each other.
Hence, the force will be attractive.
The Ammeter shows: I = 15 A,
The circuit resistance is R = 0.2 Ohms.
By the Ohm`s Law:
R = V / I or:
V = I · R
V = 15 A · 0.2 Ohms
V = 3 V
Answer: C ) 3 V.