Calculate the amount of power in Watts) required to move an object weighing 525 N from point A to point B within 36 seconds. Dis
1 answer:
Answer:
Power required, P = 0 watts
Explanation:
It is given that,
Weight of the object, W = 525 N
Time taken to move from point A to B is, t = 36 s
Distance between A and B is 3.5 m.
Power required to move an object is given by work done divided by time taken.
Work done,
The weight of the object is acting in downward direction and object is moving in forward direction such that
Since, cos(90) = 0
This gives, work done = 0
As a result, the power required to move that object is 0 watts. Hence, this is the required solution.
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Given :
Vector A has a magnitude of 63 units and points west, while vector B has the same magnitude and points due south.
To Find :
The magnitude and direction of
a) A + B .
b) A - B.
Solution :
Let , direction in north is given by +j and east is given by +i .
So , and
Now , A + B is given by :
Direction of A+B is 45° north of west .
Also , for A-B :
Direction of A-B is 45° south of west .
( When two vector of same magnitude which are perpendicular to each other are added or subtracted the resultant is always 45° from each of them)
Hence , this is the required solution .