A bridge of length 57 m and mass 80000 kg is supported at each end. A truck of mass 25600 kg is located 43 m from the left end. MA 43 m 57 m What is the force on the bridge at the left point of support? The acceleration of gravity is 9.8 m/s. Answer in units of N.
A bridge of length 57 m and mass 80000 kg is supported at each end. A truck of mass 25600 kg is located 43 m from the left end. MA 43 m 57 m What is the force on the bridge at the left point of support? The acceleration of gravity is 9.8 m/s. Answer in units of N.
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4
Transcribed Image Text:A farmer uses a lever to lift a 360 kg rock so
he can remove it from the field. The distance
l from the lever's handle to the fulcrum is 6
times the distance l2 from the fulcrum to the
rock. The fulcrum is between the rock and the
handle. The weight of the lever is negligible.
12
Fi
F2=mg
What is the minimum force the farmer must
exert on the lever in order to lift the rock? The
acceleration of gravity is 9.8 m/s².
Answer in units of N.
Transcribed Image Text:A bridge of length 57 m and mass 80000 kg
is supported at each end. A truck of mass
25600 kg is located 43 m from the left end.
43 m
57 m
What is the force on the bridge at the left
point of support? The acceleration of gravity
is 9.8 m/s?.
Answer in units of N.
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