Answer:
The reason is similar to the reason why it is difficult to roll an object on a surface with a positive incline than rolling it on the ground
The more the path becomes vertical, the more force we have to apply to oppose the force of gravity
but when we are moving horizontally, we don't have to move against the gravity and hence, it is less difficult than going vertically upwards
Answer:
Explanation:
we know angular velocity in terms of moment of inertia and angular speed
ω .... (1)
moment of inertia of rod rotating about its center of length b
........ .(2)
using v = ωr
where w is angular velocity
and r is radius of rod which is equal to b
so we get 2v = ωb
ω = 2v/b ................. (3)
here velocity is two time because two opposite ends are moving opposite with a velocity v so net velocity will be 2v
put second and third equation in ist equation
×
so final answer will be
<h3>
Answer:</h3>
15 ohms
<h3>
Explanation:</h3>
- The effective resistance of resistors is calculated depending on whether the resistors are arranged in series or parallel.
- The effective resistances of resistors in parallel is calculated using the formula;
In this case we are given,
Effective resistance, Rt as 5.0 Ω
First resistor has 10 Ω
second resistor has 30 Ω
We are required to calculate the resistance of the third resistor;
But, effective resistance for parallel arrangement is given by;
Then;
Thus;
Therefore;
Thus, the resistance of the third resistor is 15 ohms
Acceleration no longer exist as the car stops.