Qualification > Math

Mechanics...need help guys!!

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nid404:
1) A balloon of total mass 840kg is rising vertically with constant speed.  As a result of realeasing some ballast, the balloon immediately accelerates at 0.5m/s2. Calculate the mass of the ballast released
2)A load of weight 7kN is being raised from rest with constant acceleration by a cable. After the load has been raised 20 m, the cable suddenly becomes slack. It continues to move up 4m before coming to instantaneous rest. Assuming no air resistance, find the tension in the cable before it became slack

THanx in advance....

Saladin:
I think A star will be able to help you the best, becasue I have not yet started mechanics.

nid404:

--- Quote from: The Dude 321 on September 14, 2009, 05:03:19 pm ---I think A star will be able to help you the best, becasue I have not yet started mechanics.

--- End quote ---

no problem...I'll wait for astar..................as usual :P

T.Q:

--- Quote from: nid404 on September 14, 2009, 04:34:16 pm ---1) A balloon of total mass 840kg is rising vertically with constant speed.  As a result of realeasing some ballast, the balloon immediately accelerates at 0.5m/s2. Calculate the mass of the ballast released
2)A load of weight 7kN is being raised from rest with constant acceleration by a cable. After the load has been raised 20 m, the cable suddenly becomes slack. It continues to move up 4m before coming to instantaneous rest. Assuming no air resistance, find the tension in the cable before it became slack

THanx in advance....

--- End quote ---
is this M1 or what

astarmathsandphysics:
I only just say this. Am on a phone now. Will answer it when i get to a pc.

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