A pebble is released from rest at a certain height and falls freely, reaching an impact speed of 6 m/s at the floor. Next, the p
1 answer:
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Explanation:
Given,
- m = 100 kg
- g = 10 N/kg¹
- h = 60 m
- t = 20 s
To Find:
a) Work done by the pump
b) Potential energy stored in the water
c)Power spent by the pump
d)Power rating of the pump.
Solution:
- a) Work done by the pump
We know that,
- f = 100 kg * 10N/kg
- d = 60 m
[The unit'll be joule since N×M = J]
- b) Potential energy stored in the water
- m = 100 kg
- g = 10N/kg
- h = 60
- same condition here as well, N×M = J
- c) Power of the Pump
- where P = Power; W = Work done & T = Time taken
- As we got the value of work done on question (a),& ATQ time taken is 20 S.
- d) Power rating of the pump = 3 kW
Assumption: The pump is 100% efficient & works well.
Answer:
a
x-component
y-component
b
Magnitude
direction is
Explanation:
From the question we are told that
The first vertical distance is
The first horizontal distance is
The second vertical distance is
Generally the displacement is
x-component
y-component
Generally the helicopters displacement is mathematically evaluated as
The direction is the angle the displacement of the helicopter makes with the horizontal which is mathematically evaluated as
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