- #1

Wilko81

- 5

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Hi, the problem states;

A crane of mass 30,000kg is secured to the end of a steel plate 6 m long. At each end of the plate are a set of wheels. The crane has a jib of length 15m and is required to lift a mass of 25,000kgs from the end of the jib. The jib is positioned over the 6m long steel plate.

Draw a free body diagram.

What is the minimum angle with the horizontal that the jib can be, without the crane falling over?

I've attempted the free body diagram (the forces need scaling up by 10), I'm pretty sure it's not correct, any pointers in the right direction would be appreciated.

Thanks

A crane of mass 30,000kg is secured to the end of a steel plate 6 m long. At each end of the plate are a set of wheels. The crane has a jib of length 15m and is required to lift a mass of 25,000kgs from the end of the jib. The jib is positioned over the 6m long steel plate.

Draw a free body diagram.

What is the minimum angle with the horizontal that the jib can be, without the crane falling over?

I've attempted the free body diagram (the forces need scaling up by 10), I'm pretty sure it's not correct, any pointers in the right direction would be appreciated.

Thanks