It is easier to lift the same load by using three pulley system than by using two-pulley system. why give reason.
1 answer:
<h2>QUESTION:- It is easier to lift the same load by using three pulley system than by using two-pulley system.</h2><h2>ANSWER:- IN CASE OF IDEAL PULLEY SYSTEM</h2><h2>REASON:- </h2>
Logic behind is lies behind the mechanical advantage of the provided bt the Pulley system.
as if we calculate the mechanical advantage of the 2 Pulley system we will have the value 2
And if we will calculate the mechanical advantage of the 3 pulley system then we will get the value of 3
so due to extra mechanical advantage we feel it easy to move with 3 pulley system then 2 Pulley system
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Answer:
E = 867 N/C, upward.
Explanation:
- Assuming no other forces acting on the particle, it must obey Newton's 2nd Law, as follows:
- There are two forces acting on the particle in the vertical direction, one due to the electric field, and the other due to gravity.
- Since the particle is positively charged, assuming that the electric field aims upward, we can write the following expression for the left side of (1):
- Since we know that q/m = 0.1 C/kg,
- ⇒ q = 0.1m C/kg
- Replacing this value of q in (2), and simplifying masses, we get:
- We can find the value of a, simply applying the definition of acceleration:
- Replacing (4) in (3) and solving for E, we get:
- E = 867.2 N/C, upward.