2. The weight of a boat without load is 12 000 N and the volume of the immersed portion of the boat is 5.0 m³. [ Density of sea
water is 1020 kg m-³] as shown in DIAGRAM 2 DIAGRAM 2 Calculate o The buoyant force exerted to the boat. The maximum mass of load that can be supported by the boat so that it will not sink completely.
1 answer:
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Answer:
<u><em>The plank moves 0.2m from it's original position</em></u>
Explanation:
we can do this question from the constraints that ,
- the wheel and the axle have the same angular speed or velocity
- the speed of the plank is equal to the speed of the axle at the topmost point .
thus ,
<em>since the wheel is pure rolling or not slipping,</em>
<em>⇒</em>
where
<em> - speed of the wheel</em>
<em> - angular speed of the wheel</em>
<em> - radius of the wheel</em>
<em>since the wheel traverses 1 m let's say in time '' ,</em>
<em></em>
∴
⇒
the speed at the topmost point of the axle is :
⇒
this is the speed of the plank too.
thus the distance covered by plank in time '' is ,
⇒