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 Crane and Hoist Pendant L8 S 1M 8 Button Single Speed  US $153.00
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 NEW U D L R RU LD START STOP SINGLE SPEED CRANE HOIST US $99.99
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 NEW U D L R START STOP SINGLE SPEED CRANE HOIST PENDANT US $89.99
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Newton's 3rd Law Question?
On a single, light, vertical cable that does not stretch, a crane is lifting a 1,207-kg Ferrari and, below it, a 1,461-kg BMW Z8. The Ferrari is moving upward with speed 3.05 m/s and acceleration 1.37 m/s2.
a) Find the tension in the cable between the BMW and the Ferrari in Newtons.
b) Find the tension in the cable above the Ferrari in Newtons.
Is there a specific equation for tension? I need help setting up this problem can someone walk me through this?
Since the cable does not stretch, both cars will be accelerating at equal rates. Therefore you can calculate the total unbalanced force for the entire mass.
Unbalanced Force=mass x acceleration
=(1207 + 1461) x 1.37
=2668 x 1.37
=3655.16N
If you then add on the weight of both cars
Weight=mass x gravitational acceleration
=2668 x 9.8
=26146.4N
Tension = W + F
=26146.4 + 3665.16
=29811.56N (This is the tension above the ferrari)
To calculate the tension between the cars, calculate the unbalanced force for the bottom car
Unbalanced Force=mass x acceleration
=1461 x 1.37
=2001.57N
Then add the weight of the bottom car
Weight=mass x gravitational acceleration
=1461 x 9.8
=14317.8N
Tension=Weight + Unbalanced Force
=14317.8 + 2001.57
=16319.37N (This is the tension between the BMW and the Ferrari
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|
Crane and Hoist Pendant L8 S 1M 8 Button Single Speed US $153.00
|
NEW U D L R RU LD START STOP SINGLE SPEED CRANE HOIST US $99.99
|
NEW U D L R START STOP SINGLE SPEED CRANE HOIST PENDANT US $89.99
|
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